Stack-based buffer overflow in Firebird 2.1.3 through 2.1.5 before 18514, and 2.5.1 through 2.5.3 before 26623, on Windows allows remote attackers to execute arbitrary code via a crafted packet to TCP port 3050, related to a missing size check during extraction of a group number from CNCT information.
lists.opensuse.org/opensuse-security-announce/2013-03/msg00036.html
lists.opensuse.org/opensuse-security-announce/2013-03/msg00039.html
tracker.firebirdsql.org/browse/CORE-4058
www.debian.org/security/2013/dsa-2647
www.debian.org/security/2013/dsa-2648
www.securityfocus.com/bid/58393
gist.github.com/zeroSteiner/85daef257831d904479c
github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/misc/fb_cnct_group.rb
security.gentoo.org/glsa/201512-11