Ubuntu Security Notice USN-1634-1
20th November, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 11.10
Several security issues were fixed in Python Keyring.
- python-keyring - store and access your passwords safely
Dwayne Litzenberger discovered that Python Keyring's CryptedFileKeyring
file format used weak cryptography. A local attacker may use this issue to
brute-force CryptedFileKeyring keyring files. This issue only affected
Ubuntu 11.10 and Ubuntu 12.04 LTS. (CVE-2012-4571)
It was discovered that Python Keyring created keyring files with insecure
permissions. A local attacker could use this issue to access keyring files
belonging to other users.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 12.10:
- python3-keyring 0.9.2-1ubuntu0.2
- python-keyring 0.9.2-1ubuntu0.2
- Ubuntu 12.04 LTS:
- python3-keyring 0.9.2-0ubuntu0.12.04.2
- python-keyring 0.9.2-0ubuntu0.12.04.2
- Ubuntu 11.10:
- python-keyring 0.9.2-0ubuntu0.11.10.2
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
This update uses a new upstream release, which includes additional bug
fixes, and will migrate existing keyring files to the new format upon first