Placement of User into Incorrect Group Affecting container-tools:rhel8/fuse-overlayfs package, versions <0:1.12-1.module+el8.9.0+19090+d2921118


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.13% (50th percentile)

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  • Snyk IDSNYK-RHEL8-CONTAINERTOOLS-6058548
  • published15 Nov 2023
  • disclosed15 Feb 2023

Introduced: 15 Feb 2023

CVE-2023-25173  (opens in a new tab)
CWE-842  (opens in a new tab)

How to fix?

Upgrade RHEL:8 container-tools:rhel8/fuse-overlayfs to version 0:1.12-1.module+el8.9.0+19090+d2921118 or higher.
This issue was patched in RHSA-2023:6939.

NVD Description

Note: Versions mentioned in the description apply only to the upstream container-tools:rhel8/fuse-overlayfs package and not the container-tools:rhel8/fuse-overlayfs package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

containerd is an open source container runtime. A bug was found in containerd prior to versions 1.6.18 and 1.5.18 where supplementary groups are not set up properly inside a container. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases, potentially gaining access to sensitive information or gaining the ability to execute code in that container. Downstream applications that use the containerd client library may be affected as well.

This bug has been fixed in containerd v1.6.18 and v.1.5.18. Users should update to these versions and recreate containers to resolve this issue. Users who rely on a downstream application that uses containerd's client library should check that application for a separate advisory and instructions. As a workaround, ensure that the &#34;USER $USERNAME&#34; Dockerfile instruction is not used. Instead, set the container entrypoint to a value similar to ENTRYPOINT [&#34;su&#34;, &#34;-&#34;, &#34;user&#34;] to allow su to properly set up supplementary groups.

CVSS Scores

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