idn in GNU libidn before 1.33 might allow remote attackers to obtain sensitive memory information by reading a zero byte as input, which triggers an out-of-bounds read.
https://lists.gnu.org/archive/html/help-libidn/2016-07/msg00009.html
http://www.ubuntu.com/usn/USN-3068-1
http://www.securityfocus.com/bid/92070
http://www.openwall.com/lists/oss-security/2016/07/21/4
http://www.openwall.com/lists/oss-security/2016/07/20/6
http://www.debian.org/security/2016/dsa-3658
http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.html
http://lists.opensuse.org/opensuse-updates/2016-08/msg00005.html
http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=570e68886c41c2e765e6218cb317d9a9a447a041