============================================================================ Ubuntu Security Notice USN-2146-1 March 13, 2014 sudo vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 13.10 - Ubuntu 12.10 - Ubuntu 12.04 LTS - Ubuntu 10.04 LTS Summary: Several security issues were fixed in Sudo. Software Description: - sudo: Provide limited super user privileges to specific users Details: 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) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 13.10: sudo 1.8.6p3-0ubuntu3.1 sudo-ldap 1.8.6p3-0ubuntu3.1 Ubuntu 12.10: sudo 1.8.5p2-1ubuntu1.2 sudo-ldap 1.8.5p2-1ubuntu1.2 Ubuntu 12.04 LTS: sudo 1.8.3p1-1ubuntu3.6 sudo-ldap 1.8.3p1-1ubuntu3.6 Ubuntu 10.04 LTS: sudo 1.7.2p1-1ubuntu5.7 sudo-ldap 1.7.2p1-1ubuntu5.7 In general, a standard system update will make all the necessary changes. References: http://www.ubuntu.com/usn/usn-2146-1 CVE-2014-0106, https://launchpad.net/bugs/1223297 Package Information: https://launchpad.net/ubuntu/+source/sudo/1.8.6p3-0ubuntu3.1 https://launchpad.net/ubuntu/+source/sudo/1.8.5p2-1ubuntu1.2 https://launchpad.net/ubuntu/+source/sudo/1.8.3p1-1ubuntu3.6 https://launchpad.net/ubuntu/+source/sudo/1.7.2p1-1ubuntu5.7