Ubuntu 12.10 Advisory USN-1754-1 Moderate: Sudo Local Access Risk

ubuntu

February 28, 2013

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

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.

Topics Covered

security advisory sudo local access ubuntu administrative access password bypass

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.