CVE-2019-5736

NameCVE-2019-5736
Descriptionrunc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows attackers to overwrite the host runc binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of containers: (1) a new container with an attacker-controlled image, or (2) an existing container, to which the attacker previously had write access, that can be attached with docker exec. This occurs because of file-descriptor mishandling, related to /proc/self/exe.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs922050, 922169

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
lxc (PTS)buster1:3.1.0+really3.0.3-8fixed
buster (security)1:3.1.0+really3.0.3-8+deb10u1fixed
bullseye1:4.0.6-2+deb11u2fixed
bookworm1:5.0.2-1+deb12u2fixed
trixie1:5.0.3-2fixed
sid1:5.0.3-2.1fixed
runc (PTS)buster1.0.0~rc6+dfsg1-3fixed
buster (security)1.0.0~rc6+dfsg1-3+deb10u3fixed
bullseye (security), bullseye1.0.0~rc93+ds1-5+deb11u3fixed
bookworm, bookworm (security)1.1.5+ds1-1+deb12u1fixed
sid, trixie1.1.12+ds1-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
lxcsource(unstable)1:3.1.0+really3.0.3-4unimportant922169
runcsourcestretch0.1.1+dfsg1-2+deb9u1
runcsource(unstable)1.0.0~rc6+dfsg1-2922050

Notes

https://www.openwall.com/lists/oss-security/2019/02/11/2
runc: Fixed by: https://github.com/opencontainers/runc/commit/0a8e4117e7f715d5fbeef398405813ce8e88558b
lxc: Fixed by: https://github.com/lxc/lxc/commit/6400238d08cdf1ca20d49bafb85f4e224348bf9d
Not considered a security issue by LXC upstream

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