Protected variable exfiltration via CI lint authorization bypass
Published Jan 24, 2025 · Updated Feb 5, 2025
Access control failure in GitLab allows remote authenticated users with Developer access to exfiltrate protected CI/CD variables through CI lint. The CI lint POST endpoints default to simulating the protected default branch but fail to verify that the caller can merge or push to that branch. A Developer who knows or guesses a protected variable name can place it in a remote include URL, causing lint expansion to send the secret to an attacker-controlled server.
Summary
What happened
Access control failure in GitLab allows remote authenticated users with Developer access to exfiltrate protected CI/CD variables through CI lint. The CI lint POST endpoints default to simulating the protected default branch but fail to verify that the caller can merge or push to that branch. A Developer who knows or guesses a protected variable name can place it in a remote include URL, causing lint expansion to send the secret to an attacker-controlled server.
The record
- CVE
- CVE-2024-11931
- Published
- Jan 24, 2025
- Updated
- Feb 5, 2025
- Vendor
- GitLab
- Product
- GitLab
- Classifications
- CWE-1220
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 24, 2025CVE publishedPublication date reported by the CVE source.
- Feb 5, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=17.0 <17.6.4
- Affected versionversion=17.7 <17.7.3
- Affected versionversion=17.8 <17.8.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GitLab CI lint protected-variable exfiltration reproducerfunctional · demonstrated
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Technologies
Your stack
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Your stack
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