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, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
Debian Bugs922050, 922169

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
lxc (PTS)jessie1:1.0.6-6+deb8u6vulnerable
jessie (security)1:1.0.6-6+deb8u2vulnerable
stretch1:2.0.7-2+deb9u2vulnerable
buster1:3.1.0+really3.0.3-2vulnerable
sid1:3.1.0+really3.0.3-4fixed
runc (PTS)stretch0.1.1+dfsg1-2vulnerable
buster1.0.0~rc6+dfsg1-1vulnerable
sid1.0.0~rc6+dfsg1-2fixed

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
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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