7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
54.1%
A bug was found in containerd 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.
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.
Note that CVE IDs apply to a particular implementation, even if an issue is common.
If you have any questions or comments about this advisory:
To report a security issue in containerd:
github.com/advisories/GHSA-4wjj-jwc9-2x96
github.com/advisories/GHSA-fjm8-m7m6-2fjp
github.com/advisories/GHSA-phjr-8j92-w5v7
github.com/containerd/containerd
github.com/containerd/containerd/commit/133f6bb6cd827ce35a5fb279c1ead12b9d21460a
github.com/containerd/containerd/releases/tag/v1.5.18
github.com/containerd/containerd/releases/tag/v1.6.18
github.com/containerd/containerd/security/advisories/GHSA-hmfx-3pcx-653p
github.com/moby/moby/security/advisories/GHSA-rc4r-wh2q-q6c4
lists.fedoraproject.org/archives/list/[email protected]/message/LYZOKMMVX4SIEHPJW3SJUQGMO5YZCPHC
lists.fedoraproject.org/archives/list/[email protected]/message/XNF4OLYZRQE75EB5TW5N42FSXHBXGWFE
lists.fedoraproject.org/archives/list/[email protected]/message/ZTE4ITXXPIWZEQ4HYQCB6N6GZIMWXDAI
nvd.nist.gov/vuln/detail/CVE-2023-25173
pkg.go.dev/vuln/GO-2023-1574
www.benthamsgaze.org/2022/08/22/vulnerability-in-linux-containers-investigation-and-mitigation
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
54.1%