External-to-Internal escalation via project access token bot
Published Oct 11, 2021 · Updated Aug 3, 2024
Privilege escalation in GitLab allows remote authenticated users with external status to gain Internal access through project tokens. The project access token creation path assigns the token's bot user Internal status instead of preserving the creator's external restriction. Exploitation requires an external Maintainer and enabled project tokens, after which internal source code can be read and issues created.
Summary
What happened
Privilege escalation in GitLab allows remote authenticated users with external status to gain Internal access through project tokens. The project access token creation path assigns the token's bot user Internal status instead of preserving the creator's external restriction. Exploitation requires an external Maintainer and enabled project tokens, after which internal source code can be read and issues created.
The record
- CVE
- CVE-2021-22263
- Published
- Oct 11, 2021
- Updated
- Aug 3, 2024
- Vendor
- GitLab
- Product
- GitLab
- Classifications
- CWE-269, T1078
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 11, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 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=>=13.0, <14.0.9
- Affected versionversion=>=14.1, <14.1.4
- Affected versionversion=>=14.2, <14.2.2
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.
Public exploit references
- Project access token privilege-escalation reproductionfunctional · demonstrated
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Technologies
Your stack
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Your stack
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