Service crash via oversized runner descriptions
Published May 23, 2024 · Updated Oct 3, 2024
Denial of service in affected GitLab CE/EE releases allows remote authenticated users to crash the service through a crafted runner description. The description field accepts tens of megabytes without a length limit, stores the value in ci_runners, and renders it on CI/CD and runner pages until backend resources are exhausted. Project-level runner registration is required; affected releases are before 16.10.6, 16.11.0 through 16.11.2, and 17.0.0, and the crash blocks service for other users.
Summary
What happened
Denial of service in affected GitLab CE/EE releases allows remote authenticated users to crash the service through a crafted runner description. The description field accepts tens of megabytes without a length limit, stores the value in ci_runners, and renders it on CI/CD and runner pages until backend resources are exhausted. Project-level runner registration is required; affected releases are before 16.10.6, 16.11.0 through 16.11.2, and 17.0.0, and the crash blocks service for other users.
The record
- CVE
- CVE-2024-2874
- Published
- May 23, 2024
- Updated
- Oct 3, 2024
- Vendor
- GitLab
- Product
- GitLab
- Classifications
- CWE-770, T1499.003
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 23, 2024CVE publishedPublication date reported by the CVE source.
- Oct 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <16.10.6
- Affected versionversion=16.11 <16.11.3
- Affected versionversion=17.0 <17.0.1
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 runner-description denial-of-service reproductionproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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