The Google Security Team discovered a buffer overflow vulnerability in the HTTP transport code in apt-get. An attacker able to man-in-the-middle a HTTP request to an apt repository can trigger the buffer overflow, leading to a crash of the "http" apt method binary, or potentially to arbitrary code execution. Two regression fixes were included in this update: * Fix regression from the previous update in DSA-3025-1 when the custom apt configuration option for Dir::state::lists is set to a relative path . * Fix regression in the reverificaiton handling of cdrom: sources that may lead to incorrect hashsum warnings. Affected users need to run "apt-cdrom add" again after the update was applied.