The cert_TestHostName function in lib/certdb/certdb.c in the certificate-checking implementation in Mozilla Network Security Services (NSS) before 3.16 accepts a wildcard character that is embedded in an internationalized domain name's U-label, which might allow man-in-the-middle attackers to spoof SSL servers via a crafted certificate.
https://security.gentoo.org/glsa/201504-01
https://developer.mozilla.org/en-US/docs/NSS/NSS_3.16_release_notes
https://bugzilla.redhat.com/show_bug.cgi?id=1079851
https://bugzilla.mozilla.org/show_bug.cgi?id=903885
http://www.vmware.com/security/advisories/VMSA-2014-0012.html
http://www.ubuntu.com/usn/USN-2185-1
http://www.ubuntu.com/usn/USN-2159-1
http://www.securityfocus.com/bid/66356
http://www.securityfocus.com/archive/1/534161/100/0/threaded
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.oracle.com/technetwork/topics/security/cpuoct2014-1972960.html
http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
http://www.mozilla.org/security/announce/2014/mfsa2014-45.html
http://www.debian.org/security/2014/dsa-2994
http://secunia.com/advisories/60794
http://secunia.com/advisories/60621
http://secunia.com/advisories/59866
http://seclists.org/fulldisclosure/2014/Dec/23
http://lists.opensuse.org/opensuse-updates/2014-05/msg00033.html
http://lists.opensuse.org/opensuse-updates/2014-05/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00006.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-May/132437.html
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761