Podman: buildah: cri-o: symlink traversal vulnerability in the containers/storage library can cause denial of service (dos)

6.5 CVSS

Vulnerability Description

A vulnerability was found in Podman, Buildah, and CRI-O. A symlink traversal vulnerability in the containers/storage library can cause Podman, Buildah, and CRI-O to hang and result in a denial of service via OOM kill when running a malicious image using an automatically assigned user namespace (`--userns=auto` in Podman and Buildah). The containers/storage library will read /etc/passwd inside the container, but does not properly validate if that file is a symlink, which can be used to cause the library to read an arbitrary file on the host.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Red Hat would like to thank Erik Sjölund (Upstream) for reporting this issue.

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Affected Vendor

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Affected Software

Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.4 Extended Update Support, Red Hat OpenShift Container Platform 4.12, Red Hat OpenShift Container Platform 4.13, Red Hat OpenShift Container Platform 4.14, Red Hat OpenShift Container Platform 4.15, Red Hat OpenShift Container Platform 4.16, Red Hat OpenShift Container Platform 4.17, OpenShift Developer Tools and Services, Red Hat Enterprise Linux 10, Red Hat OpenShift Container Platform 4, Red Hat Quay 3

Vulnerable Versions:

0, 8100020241101101019.afee755d, 4:4.9.4-16.el9_4, 4:5.2.2-9.el9_5, 2:1.37.5-1.el9_5, 2:1.33.11-1.el9_4, 0:1.25.5-30.rhaos4.12.git53dc492.el8, 0:1.26.5-26.rhaos4.13.giteb3d487.el8, 0:1.27.8-12.rhaos4.14.git7597c43.el8, v4.14.0-202503060906.p0.gb03f3f5.assembly.stream.el8, 0:1.28.11-5.rhaos4.15.git35a2431.el8, v4.15.0-202503060734.p0.gbc0b789.assembly.stream.el8, 0:1.29.9-6.rhaos4.16.gite7bd45a.el8, 4:4.9.4-12.rhaos4.16.el8, v4.16.0-202503121138.p0.g31c3c26.assembly.stream.el9, 0:1.30.6-6.rhaos4.17.git6ac6e96.el8, 5:5.2.2-1.rhaos4.17.el8, v4.17.0-202501281204.p0.ga753153.assembly.stream.el9