CVE-2021-39947
HIGH
7.5
CVSS Score
Published: June 6, 2022 at 04:48 PM UTC
Updated: June 17, 2026 at 04:04 AM UTC
1 product affected across 1 vendorGitLab Runner
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Severity
HIGH7.5
Exploit prediction
EPSS 0.9%
Description
In specific circumstances, trace file buffers in GitLab Runner versions up to 14.3.4, 14.4 to 14.4.2, and 14.5 to 14.5.2 would re-use the file descriptor 0 for multiple traces and mix the output of several jobs
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
GitLab Runner· GitLabgitlab
95%v < 14.3.4v < 14.4.2v < 14.5.214.4.0 ≤ v < 14.4.214.5.0 ≤ v < 14.5.2
Affected range stops below 14.3.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.4.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.5.2, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39947.jsonx_refsource_MISCBroken Link
Source: [email protected]
https://gitlab.com/gitlab-org/gitlab-runner/-/issues/28732CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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