On October 4th, in a security notice Canonical published details about some Python 2.7 vulnerabilities affecting its Ubuntu 11.10, Ubuntu 11.04, and Ubuntu 10.04 LTS operating systems.
According to Canonical
, several security issues were fixed in Python 2.6. Multiple vulnerabilities have been unidentified and repaired. A local attacker with write access to the current working directory, could have used this exploit to execute arbitrary, to cause a denial of service via application crash, and even obtain access to CGI script source files.
If you want to see what had been fixed, check out the appropriate package links: CVE-2008-5983
, and CVE-2012-1150
The security flaws can be fixed if you upgrade your system(s) to the latest python2.6 and python2.6-minimal, specific to each operating system. To apply the update, run the Update Manager application.
In general, a standard system update will make all the necessary changes. A system restart won't be necessary to implement the changes.