CVE-2023-28642

AppArmor bypass with symlinked /proc in runc

Published Mar 29, 2023 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
runc is a CLI tool for spawning and running containers according to the OCI specification. It was found that AppArmor can be bypassed when `/proc` inside the container is symlinked with a specific mount configuration. This issue has been fixed in runc version 1.1.5, by prohibiting symlinked `/proc`. See PR #3785 for details. users are advised to upgrade. Users unable to upgrade should avoid using an untrusted container image.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-1007 runc is a CLI tool for spawning and running containers according to the OCI specification. It was found that AppArmor can be bypassed when `/proc` inside the container is symlinked with a specific mount configuration. This issue has been fixed in runc version 1.1.5, by prohibiting symlinked `/proc`. See PR #3785 for details. users are advised to upgrade. Users unable to upgrade should avoid using an untrusted container image.
Github GHSA Github GHSA GHSA-g2j6-57v7-gm8c runc AppArmor bypass with symlinked /proc
Ubuntu USN Ubuntu USN USN-6088-1 runC vulnerabilities
Ubuntu USN Ubuntu USN USN-6088-2 runC vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Feb 12, 2025, 4:02 PM
Reserved
Mar 20, 2023, 12:19 PM
Status
Modified
Published
Mar 29, 2023, 7:15 PM
Modified
Jun 17, 2026, 5:48 AM
Severity
Moderate
Public date
Mar 29, 2023, 12:00 AM