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CVE-2016-7076

Published: 29 May 2018

sudo before version 1.8.18p1 is vulnerable to a bypass in the sudo noexec restriction if application run via sudo executed wordexp() C library function with a user supplied argument. A local user permitted to run such application via sudo with noexec restriction could possibly use this flaw to execute arbitrary commands with elevated privileges.

Notes

AuthorNote
seth-arnold
See also CVE-2016-7032
This alert mentions a seccomp-based filter. If we decide to
backport that filter for this CVE, and CVE-2016-7032, then 'medium'
may continue to be appropriate. If we decide the seccomp-based filter
is not suitable for a backport, then perhaps 'negligible' would be
appropriate.

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
sudo
Launchpad, Ubuntu, Debian
artful Not vulnerable
(1.8.19p1-1ubuntu1)
bionic Not vulnerable
(1.8.19p1-1ubuntu1)
cosmic Not vulnerable
(1.8.19p1-1ubuntu1)
disco Not vulnerable
(1.8.19p1-1ubuntu1)
eoan Not vulnerable
(1.8.19p1-1ubuntu1)
focal Not vulnerable
(1.8.19p1-1ubuntu1)
groovy Not vulnerable
(1.8.19p1-1ubuntu1)
hirsute Not vulnerable
(1.8.19p1-1ubuntu1)
precise Ignored
(end of life)
trusty
Released (1.8.9p5-1ubuntu1.5+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (1.8.18p1)
xenial
Released (1.8.16-0ubuntu1.6)
yakkety Ignored
(end of life)
zesty Not vulnerable
(1.8.19p1-1ubuntu1)
Patches:
upstream: https://www.sudo.ws/repos/sudo/rev/e7d09243e51b
upstream: https://www.sudo.ws/repos/sudo/rev/7b8357b0a358
upstream: https://www.sudo.ws/repos/sudo/rev/167a518d8129
upstream: https://www.sudo.ws/repos/sudo/rev/59d76bdc0f0c
upstream: https://www.sudo.ws/repos/sudo/rev/5d88d7cda853
upstream: https://www.sudo.ws/repos/sudo/rev/120a317ce25b

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H