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CVE-2017-2616

Published: 22 February 2017

A 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.

Notes

AuthorNote
sbeattie
ubuntu uses su from shadow package, not util-linux up until
(2.32-0.2)

Priority

Medium

Cvss 3 Severity Score

4.7

Score breakdown

Status

Package Release Status
shadow
Launchpad, Ubuntu, Debian
artful
Released (1:4.2-3.2ubuntu2)
bionic
Released (1:4.2-3.2ubuntu2)
cosmic
Released (1:4.2-3.2ubuntu2)
disco
Released (1:4.2-3.2ubuntu2)
precise Ignored
(end of life)
trusty
Released (1:4.1.5.1-1ubuntu9.4)
upstream
Released (1:4.4-4)
xenial
Released (1:4.2-3.1ubuntu5.2)
yakkety
Released (1:4.2-3.2ubuntu1.16.10.1)
zesty
Released (1:4.2-3.2ubuntu1.17.04.1)
Patches:
upstream: https://github.com/shadow-maint/shadow/commit/08fd4b69e84364677a10e519ccb25b71710ee686

util-linux
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
(2.31.1-0.4ubuntu3.3)
cosmic Not vulnerable
(2.31.1-0.4ubuntu3.3)
disco Not vulnerable
(2.31.1-0.4ubuntu3.3)
precise Ignored
(end of life)
trusty Not vulnerable
(binary not built)
upstream
Released (2.29.2-1)
xenial Not vulnerable
(binary not built)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)
Patches:

upstream: https://github.com/karelzak/util-linux/commit/dffab154d29a288aa171ff50263ecc8f2e14a891

Severity score breakdown

Parameter Value
Base score 4.7
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H