Heap-based buffer overflow in the _zip_readcdir function in zip_open.c in libzip 0.10 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a zip archive with the number of directories set to 0, related to an "incorrect loop construct."
http://www.openwall.com/lists/oss-security/2012/03/29/11
http://www.nih.at/libzip/NEWS.html
http://www.mandriva.com/security/advisories?name=MDVSA-2012:034