The dissector_postgresql function in dissectors/ec_postgresql.c in Ettercap before 0.8.1 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted password length, which triggers a 0 character to be written to an arbitrary memory location.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-6396
• Ettercap/ettercap@e3abe7d
• https://security.gentoo.org/glsa/201505-01
• https://www.obrela.com/home/security-labs/advisories/osi-advisory-osi-1402/
• http://www.securityfocus.com/archive/1/534248/100/0/threaded
• http://www.securityfocus.com/bid/71697