Several security issues were fixed in Python Keyring.
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)
20 November 2012
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Python Keyring.
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 versions:
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 use.
Vulmon