Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.10 : sudo vulnerabilities (USN-2146-1)

Ubuntu Security Notice (C) 2014 Canonical, Inc. / NASL script (C) 2014 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related patches.

Description :

Sebastien Macke discovered that Sudo incorrectly handled blacklisted
environment variables when the env_reset option was disabled. A local
attacker could use this issue to possibly run unintended commands by
using blacklisted environment variables. In a default Ubuntu
installation, the env_reset option is enabled by default. This issue
only affected Ubuntu 10.04 LTS and Ubuntu 12.04 LTS. (CVE-2014-0106)

It was discovered that the Sudo init script set a date in the past on
existing timestamp files instead of using epoch to invalidate them
completely. A local attacker could possibly modify the system time to
attempt to reuse timestamp files. This issue only applied to Ubuntu
12.04 LTS, Ubuntu 12.10 and Ubuntu 13.10. (LP: #1223297).

Solution :

Update the affected sudo and / or sudo-ldap packages.

Risk factor :

Medium / CVSS Base Score : 6.6
(CVSS2#AV:L/AC:M/Au:S/C:C/I:C/A:C)
CVSS Temporal Score : 5.7
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 73016 ()

Bugtraq ID: 65997

CVE ID: CVE-2014-0106