USN-1634-1: Python Keyring vulnerabilities

Releases

• Ubuntu 12.10
• Ubuntu 12.04
• Ubuntu 11.10

Packages

• python-keyring - store and access your passwords safely

Details

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.

Update instructions

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

Ubuntu 12.10

• python3-keyring - 0.9.2-1ubuntu0.2
• python-keyring - 0.9.2-1ubuntu0.2

Ubuntu 12.04

• 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

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.

References

• CVE-2012-4571
• https://launchpad.net/bugs/1004845