sudo: Privilege escalation — GLSA 201406-30

A vulnerability has been found in sudo allowing a local attacker to gain elevated privileges.

Affected Packages

app-admin/sudo on all architectures
Affected versions < 1.8.5
Unaffected versions >= 1.8.5, < 1.6.9

Background

sudo allows a system administrator to give users the ability to run commands as other users. Access to commands may also be granted on a range to hosts.

Description

When the Sudo env_reset option is disabled (it is enabled by default), certain environment variables are not blacklisted as expected.

Impact

A local attacker, authorized to run commands using sudo, can use this flaw to execute arbitrary code or escalate his privileges.

Workaround

There is no known workaround at this time.

Resolution

All sudo users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-admin/sudo-1.8.5"
 

References

Release Date
June 27, 2014

Latest Revision
June 27, 2014: 1

Severity
high

Exploitable
local

Bugzilla entries