[USN-1223-1] Puppet vulnerabilities
Jamie Strandboge
jamie at canonical.com
Sat Oct 1 00:38:44 UTC 2011
==========================================================================
Ubuntu Security Notice USN-1223-1
September 30, 2011
puppet vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
Summary:
Puppet could be made to overwrite files and run programs with administrator
privileges.
Software Description:
- 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 LTS:
puppet-common 0.25.4-2ubuntu6.3
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1223-1
CVE-2011-3869, CVE-2011-3870, CVE-2011-3871
Package Information:
https://launchpad.net/ubuntu/+source/puppet/2.6.4-2ubuntu2.3
https://launchpad.net/ubuntu/+source/puppet/2.6.1-0ubuntu2.2
https://launchpad.net/ubuntu/+source/puppet/0.25.4-2ubuntu6.3
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