The svcauth_gss_accept_sec_context function in lib/rpc/svc_auth_gss.c in MIT Kerberos 5 (aka krb5) 1.11.x through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 transmits uninitialized interposer data to clients, which allows remote attackers to obtain sensitive information from process heap memory by sniffing the network for data in a handle field.
lists.fedoraproject.org/pipermail/package-announce/2015-March/151103.html
lists.fedoraproject.org/pipermail/package-announce/2015-March/151437.html
lists.opensuse.org/opensuse-security-announce/2015-02/msg00011.html
lists.opensuse.org/opensuse-security-announce/2015-02/msg00016.html
lists.opensuse.org/opensuse-updates/2015-02/msg00044.html
rhn.redhat.com/errata/RHSA-2015-0439.html
web.mit.edu/kerberos/advisories/2015-001-patch-r113.txt
web.mit.edu/kerberos/advisories/MITKRB5-SA-2015-001.txt
www.debian.org/security/2015/dsa-3153
www.mandriva.com/security/advisories?name=MDVSA-2015:069
www.securityfocus.com/bid/72503
www.ubuntu.com/usn/USN-2498-1
github.com/krb5/krb5/commit/5bb8a6b9c9eb8dd22bc9526751610aaa255ead9c