Account impersonation via Dependency Proxy session cookie
Published Sep 12, 2024 · Updated Sep 13, 2024
Session-token exposure in affected GitLab CE/EE releases allows remote authenticated users with a victim's CI_JOB_TOKEN to impersonate that victim. The Dependency Proxy authentication response leaves session storage active, so a bearer token derived from the job token causes GitLab to issue the victim's session cookie. Exploitation requires possession of another user's job token and user interaction; the resulting session permits actions as that user and limited service interruption.
Summary
What happened
Session-token exposure in affected GitLab CE/EE releases allows remote authenticated users with a victim's CI_JOB_TOKEN to impersonate that victim. The Dependency Proxy authentication response leaves session storage active, so a bearer token derived from the job token causes GitLab to issue the victim's session cookie. Exploitation requires possession of another user's job token and user interaction; the resulting session permits actions as that user and limited service interruption.
The record
- CVE
- CVE-2024-8641
- Published
- Sep 12, 2024
- Updated
- Sep 13, 2024
- Vendor
- GitLab
- Product
- GitLab
- Classifications
- CWE-270, T1550.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 12, 2024CVE publishedPublication date reported by the CVE source.
- Sep 13, 2024Record 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=13.7 <17.1.7
- Affected versionversion=17.2 <17.2.5
- Affected versionversion=17.3 <17.3.2
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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