CVE-2022-29162

NameCVE-2022-29162
Descriptionrunc is a CLI tool for spawning and running containers on Linux according to the OCI specification. A bug was found in runc prior to version 1.1.2 where `runc exec --cap` created processes with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2). This bug did not affect the container security sandbox as the inheritable set never contained more capabilities than were included in the container's bounding set. This bug has been fixed in runc 1.1.2. This fix changes `runc exec --cap` behavior such that the additional capabilities granted to the process being executed (as specified via `--cap` arguments) do not include inheritable capabilities. In addition, `runc spec` is changed to not set any inheritable capabilities in the created example OCI spec (`config.json`) file.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
runc (PTS)stretch0.1.1+dfsg1-2+deb9u1fixed
stretch (security)0.1.1+dfsg1-2+deb9u3fixed
buster1.0.0~rc6+dfsg1-3vulnerable
bullseye1.0.0~rc93+ds1-5vulnerable
bookworm, sid1.1.1+ds1-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
runcsourcestretch(not affected)
runcsource(unstable)(unfixed)

Notes

[stretch] - runc <not-affected> (Vulnerable code not present)
https://www.openwall.com/lists/oss-security/2022/05/12/1
https://github.com/opencontainers/runc/commit/364ec0f1b4fa188ad96049c590ecb42fa70ea165 (v1.1.2)
https://github.com/opencontainers/runc/commit/98fe566c527479195ce3c8167136d2a555fe6b65 (main)

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