Python before 3.3.4 RC1 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a file size value larger than the size of the zip file to the (1) ZipExtFile.read, (2) ZipExtFile.read(n), (3) ZipExtFile.readlines, (4) ZipFile.extract, or (5) ZipFile.extractall function.
http://bugs.python.org/issue20078
http://hg.python.org/cpython/rev/79ea4ce431b1
http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
http://lists.opensuse.org/opensuse-updates/2014-05/msg00008.html
http://seclists.org/oss-sec/2014/q1/592
http://seclists.org/oss-sec/2014/q1/595
http://www.securityfocus.com/bid/65179
http://www.securitytracker.com/id/1029973
https://docs.python.org/3.3/whatsnew/changelog.html