CVE-2021-39947

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Published Jun 6, 2022 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

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 Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

GitLab

GitLab Runner

affected

Version	Status	Constraints
`<14.3.4`	affected	—
`>=14.4, <14.4.2`	affected	—
`>=14.5, <14.5.2`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:gitlab:gitlab_runner::::::::
	cpe:2.3:a:gitlab:gitlab_runner::::::::
	cpe:2.3:a:gitlab:gitlab_runner::::::::

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-26303	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

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.870% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39947.json
https://gitlab.com/gitlab-org/gitlab-runner/-/issues/28732

History

No history.

Subscriptions

Gitlab Gitlab Runner

Weaknesses

NVD-CWE-noinfo

Sources

CVE record Updated: Aug 4, 2024, 2:20 AM

Status: PUBLISHED
Assigner: GitLab
Published: Jun 6, 2022, 4:48 PM
Updated: Aug 4, 2024, 2:20 AM
Reserved: Aug 23, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 4:04 AM

Status: Modified
Published: Jun 6, 2022, 5:15 PM
Modified: Jun 17, 2026, 4:04 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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