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Ubuntu Security Notice USN-1754-1
February 28, 2013

sudo vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 12.10
• Ubuntu 12.04 LTS
• Ubuntu 11.10
• Ubuntu 10.04 LTS
• Ubuntu 8.04 LTS

Summary:

Sudo could be made to run programs as the administrator without a password
prompt.

Software Description:

• sudo: Provide limited super user privileges to specific users

Details:

Marco Schoepl discovered that Sudo incorrectly handled time stamp files
when the system clock is set to epoch. A local attacker could use this
issue to run Sudo commands without a password prompt.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.10:
sudo 1.8.5p2-1ubuntu1.1
sudo-ldap 1.8.5p2-1ubuntu1.1

Ubuntu 12.04 LTS:
sudo 1.8.3p1-1ubuntu3.4
sudo-ldap 1.8.3p1-1ubuntu3.4

Ubuntu 11.10:
sudo 1.7.4p6-1ubuntu2.2
sudo-ldap 1.7.4p6-1ubuntu2.2

Ubuntu 10.04 LTS:
sudo 1.7.2p1-1ubuntu5.6
sudo-ldap 1.7.2p1-1ubuntu5.6

Ubuntu 8.04 LTS:
sudo 1.6.9p10-1ubuntu3.10
sudo-ldap 1.6.9p10-1ubuntu3.10

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1754-1
CVE-2013-1775

Package Information:
https://launchpad.net/ubuntu/+source/sudo/1.8.5p2-1ubuntu1.1
https://launchpad.net/ubuntu/+source/sudo/1.8.3p1-1ubuntu3.4
https://launchpad.net/ubuntu/+source/sudo/1.7.4p6-1ubuntu2.2
https://launchpad.net/ubuntu/+source/sudo/1.7.2p1-1ubuntu5.6
https://launchpad.net/ubuntu/+source/sudo/1.6.9p10-1ubuntu3.10

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