CVE-2023-20031

Description

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.

Weakness classification

• psirt@cisco.com: CWE-244
• nvd@nist.gov: NVD-CWE-noinfo

Primary references

• psirt@cisco.com — Mitigation, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Vendor Advisory