Vulnerability Information
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Vulnerability Title
containerd supplementary groups are not set up properly
Vulnerability Description
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.
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Vulnerability Type
授权机制不正确
Vulnerability Title
containerd 安全漏洞
Vulnerability Description
containerd是containerd开源的一个行业标准的容器运行时。 containerd 1.6.18之前的1.6.x版本和1.5.18之前的1.5.x版本存在安全漏洞，该漏洞源于补充组在容器内没有被正确设置，攻击者利用该漏洞可能会获得对敏感信息的访问权限或获得在该容器中执行代码的能力。
CVSS Information
N/A
Vulnerability Type
N/A