USN-956-1: sudo vulnerability

Releases

• Ubuntu 10.04
• Ubuntu 9.10
• Ubuntu 9.04
• Ubuntu 8.04
• Ubuntu 6.06

Packages

• sudo - Provide limited super user privileges to specific users

Details

Evan Broder and Anders Kaseorg discovered that sudo did not properly
sanitize its environment when configured to use secure_path (the default in
Ubuntu). A local attacker could exploit this to execute arbitrary code as
root if sudo was configured to allow the attacker to use a program that
interpreted the PATH environment variable.

Update instructions

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

Ubuntu 9.10

• sudo-ldap - 1.7.0-1ubuntu2.4
• sudo - 1.7.0-1ubuntu2.4

Ubuntu 9.04

• sudo-ldap - 1.6.9p17-1ubuntu3.3
• sudo - 1.6.9p17-1ubuntu3.3

Ubuntu 8.04

• sudo-ldap - 1.6.9p10-1ubuntu3.8
• sudo - 1.6.9p10-1ubuntu3.8

Ubuntu 6.06

• sudo-ldap - 1.6.8p12-1ubuntu6.3
• sudo - 1.6.8p12-1ubuntu6.3

Ubuntu 10.04

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

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

References

• CVE-2010-1646