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 `"USER $USERNAME"` Dockerfile instruction is not used. Instead, set the container entrypoint to a value similar to `ENTRYPOINT ["su", "-", "user"]` to allow `su` to properly set up supplementary groups.
References
Configurations
Configuration 1 (hide)
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History
21 Nov 2024, 07:49
Type | Values Removed | Values Added |
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References | () https://github.com/advisories/GHSA-4wjj-jwc9-2x96 - Not Applicable | |
References | () https://github.com/advisories/GHSA-fjm8-m7m6-2fjp - Not Applicable | |
References | () https://github.com/advisories/GHSA-phjr-8j92-w5v7 - Not Applicable | |
References | () https://github.com/containerd/containerd/commit/133f6bb6cd827ce35a5fb279c1ead12b9d21460a - Patch | |
References | () https://github.com/containerd/containerd/releases/tag/v1.5.18 - Release Notes | |
References | () https://github.com/containerd/containerd/releases/tag/v1.6.18 - Release Notes | |
References | () https://github.com/containerd/containerd/security/advisories/GHSA-hmfx-3pcx-653p - Mitigation, Vendor Advisory | |
References | () https://github.com/moby/moby/security/advisories/GHSA-rc4r-wh2q-q6c4 - Not Applicable | |
References | () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LYZOKMMVX4SIEHPJW3SJUQGMO5YZCPHC/ - | |
References | () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XNF4OLYZRQE75EB5TW5N42FSXHBXGWFE/ - | |
References | () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZTE4ITXXPIWZEQ4HYQCB6N6GZIMWXDAI/ - | |
References | () https://www.benthamsgaze.org/2022/08/22/vulnerability-in-linux-containers-investigation-and-mitigation/ - Exploit, Third Party Advisory | |
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.3 |
15 Sep 2023, 21:15
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05 Sep 2023, 03:15
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30 Aug 2023, 04:15
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Summary | 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 `"USER $USERNAME"` Dockerfile instruction is not used. Instead, set the container entrypoint to a value similar to `ENTRYPOINT ["su", "-", "user"]` to allow `su` to properly set up supplementary groups. |
Information
Published : 2023-02-16 15:15
Updated : 2024-11-21 07:49
NVD link : CVE-2023-25173
Mitre link : CVE-2023-25173
CVE.ORG link : CVE-2023-25173
JSON object : View
Products Affected
linuxfoundation
- containerd
CWE
CWE-863
Incorrect Authorization