Stack-based buffer overflow in the evutil_parse_sockaddr_port function in evutil.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (segmentation fault) via vectors involving a long string in brackets in the ip_as_string argument.
https://www.mozilla.org/security/advisories/mfsa2017-13/
https://www.mozilla.org/security/advisories/mfsa2017-12/
https://www.mozilla.org/security/advisories/mfsa2017-11/
https://www.mozilla.org/security/advisories/mfsa2017-10/
https://security.gentoo.org/glsa/201705-01
https://github.com/libevent/libevent/commit/329acc18a0768c21ba22522f01a5c7f46cacc4d5
https://github.com/libevent/libevent/blob/release-2.1.6-beta/ChangeLog
https://bugzilla.mozilla.org/show_bug.cgi?id=1343453
https://access.redhat.com/errata/RHSA-2017:1201
https://access.redhat.com/errata/RHSA-2017:1106
https://access.redhat.com/errata/RHSA-2017:1104
http://www.securityfocus.com/bid/96014
http://www.openwall.com/lists/oss-security/2017/02/02/7