mod_python (libapache2-mod-python) 3.1.4 and earlier does not properly handle when output filters process more than 16384 bytes, which can cause filter.read to return portions of previously freed memory.
https://launchpad.net/bugs/89308
https://issues.rpath.com/browse/RPL-1105
https://exchange.xforce.ibmcloud.com/vulnerabilities/14751
http://www.vupen.com/english/advisories/2007/0846
http://www.ubuntu.com/usn/usn-430-1
http://www.securityfocus.com/bid/22849
http://www.securityfocus.com/archive/1/462185/100/0/threaded
http://secunia.com/advisories/24424