CVE-2023-20031

A vulnerability in the SSL/TLS certificate handling of Snort 3 Detection
Engine integration with Cisco Firepower Threat Defense (FTD) Software could
allow an unauthenticated, remote attacker to cause the Snort 3 detection
engine to restart. This vulnerability is due to a logic error that occurs
when an SSL/TLS certificate that is under load is accessed when it is
initiating an SSL connection. Under specific, time-based constraints, an
attacker could exploit this vulnerability by sending a high rate of SSL/TLS
connection requests to be inspected by the Snort 3 detection engine on an
affected device. A successful exploit could allow the attacker to cause the
Snort 3 detection engine to reload, resulting in either a bypass or a
denial of service (DoS) condition, depending on device configuration. The
Snort detection engine will restart automatically. No manual intervention
is required.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1056281&gt;