USN-1046-1: Sudo vulnerability

Releases

• Ubuntu 10.10
• Ubuntu 10.04
• Ubuntu 9.10

Packages

• sudo - Provide limited super user privileges to specific users

Details

Alexander Kurtz discovered that sudo would not prompt for a password when
a group was specified in the Runas_Spec. A local attacker could exploit
this to execute arbitrary code as the specified group if sudo was
configured to allow the attacker to use a program as this group. The group
Runas_Spec is not used in the default installation of Ubuntu.

Update instructions

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

Ubuntu 9.10

• sudo-ldap - 1.7.0-1ubuntu2.6
• sudo - 1.7.0-1ubuntu2.6

Ubuntu 10.10

• sudo-ldap - 1.7.2p7-1ubuntu2.1
• sudo - 1.7.2p7-1ubuntu2.1

Ubuntu 10.04

• sudo-ldap - 1.7.2p1-1ubuntu5.3
• sudo - 1.7.2p1-1ubuntu5.3

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

References

• CVE-2011-0010