CVE-2017-2616

NameCVE-2017-2616
DescriptionA race condition was found in util-linux before 2.32.1 in the way su handled the management of child processes. A local authenticated attacker could use this flaw to kill other processes with root privileges under specific conditions.
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)
ReferencesDLA-838-1, DSA-3793-1
NVD severitymedium (attack range: local)
Debian Bugs855943

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
coreutils (PTS)jessie8.23-4fixed
stretch8.26-3fixed
buster, sid8.30-1fixed
shadow (PTS)jessie (security), jessie1:4.2-3+deb8u4fixed
stretch1:4.4-4.1fixed
buster, sid1:4.5-1.1fixed
util-linux (PTS)jessie2.25.2-6vulnerable
stretch (security), stretch2.29.2-1+deb9u1fixed
buster2.32.1-0.1fixed
sid2.32.1-0.2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
coreutilssource(unstable)8.20-1unimportant
shadowsource(unstable)1:4.4-4medium855943
shadowsourcejessie1:4.2-3+deb8u3mediumDSA-3793-1
shadowsourcewheezy1:4.1.5.1-1+deb7u1mediumDLA-838-1
util-linuxsource(unstable)2.29.2-1unimportant

Notes

https://github.com/shadow-maint/shadow/commit/08fd4b69e84364677a10e519ccb25b71710ee686
https://github.com/karelzak/util-linux/commit/dffab154d29a288aa171ff50263ecc8f2e14a891
Coreutils: Removed from source in https://git.savannah.gnu.org/cgit/coreutils.git/commit/?id=928dd737
and not installed by default since 2007.

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