The (1) sss_autofs_cmd_getautomntent and (2) sss_autofs_cmd_getautomntbyname function in responder/autofs/autofssrv_cmd.c and the (3) ssh_cmd_parse_request function in responder/ssh/sshsrv_cmd.c in System Security Services Daemon (SSSD) before 1.9.4 allow remote attackers to cause a denial of service (out-of-bounds read, crash, and restart) via a crafted SSSD packet.
https://fedorahosted.org/sssd/wiki/Releases/Notes-1.9.4
https://fedorahosted.org/sssd/ticket/1781
https://bugzilla.redhat.com/show_bug.cgi?id=884601
http://www.securityfocus.com/bid/57539
http://secunia.com/advisories/52315
http://secunia.com/advisories/51928
http://rhn.redhat.com/errata/RHSA-2013-0508.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098613.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098434.html
http://git.fedorahosted.org/cgit/sssd.git/commit/?id=30e2585dd46b62aa3a4abdf6de3f40a20e1743ab
http://git.fedorahosted.org/cgit/sssd.git/commit/?id=2bd514cfde1938b1e245af11c9b548d58d49b325