CVE-2023-25173
Privilege escalation via supplementary groups in github.com/containerd/containerd
描述
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.
如何修補 CVE-2023-25173
要修補 CVE-2023-25173,請將受影響套件升級到下列已修補版本。
- —升級至 1.4.13~ds1-1~deb11u4 或更新版本
- —升級至 1.5.18 或更新版本
- —升級至 1.5.18 或更新版本
CVE-2023-25173 正在被利用嗎?
低 — EPSS 為 0.5%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 1.4.13~ds1-1~deb11u4
- from 0, < 1.5.18