USN-1223-1: Puppet vulnerabilities

Releases

• Ubuntu 11.04
• Ubuntu 10.10
• Ubuntu 10.04

Packages

• puppet - Centralized configuration management

Details

It was discovered that Puppet unsafely opened files when the k5login type
is used to manage files. A local attacker could exploit this to overwrite
arbitrary files which could be used to escalate privileges. (CVE-2011-3869)

Ricky Zhou discovered that Puppet did not drop privileges when creating
SSH authorized_keys files. A local attacker could exploit this to overwrite
arbitrary files as root. (CVE-2011-3870)

It was discovered that Puppet used a predictable filename when using the
--edit resource. A local attacker could exploit this to edit arbitrary
files or run arbitrary code as the user invoking the program, typically
root. (CVE-2011-3871)

Update instructions

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

Ubuntu 11.04

• puppet-common - 2.6.4-2ubuntu2.3

Ubuntu 10.10

• puppet-common - 2.6.1-0ubuntu2.2

Ubuntu 10.04

• puppet-common - 0.25.4-2ubuntu6.3

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

References

• CVE-2011-3869
• CVE-2011-3870
• CVE-2011-3871