Ubuntu Security Notice USN-3834-2

Ubuntu Security Notice 3834-2 – USN-3834-1 fixed a vulnerability in perl. This update provides the corresponding update for Ubuntu 12.04 ESM. Jayakrishna Menon discovered that Perl incorrectly handled Perl_my_setenv. An attacker could use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

Link: https://packetstormsecurity.com/files/150565/USN-3834-2.txt