Cisco Secure Firewall Threat Defense Software Snort 2 SSL/TLS Denial of Service Vulnerability
Cisco fixed an SSL certificate parsing flaw in FTD's Snort 2 engine letting unauthenticated remote attackers force detection engine restarts.
Incomplete validation of SSL certificates in the Snort 2 Detection Engine of Cisco Secure Firewall Threat Defense software allows an unauthenticated, remote attacker to send a crafted SSL connection setup request for parsing. A successful exploit restarts the Snort 2 Detection Engine unexpectedly, causing a denial of service. Cisco has released software updates, and no workarounds address the vulnerability.
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