CVSS 3.1 Score 5.4 of 10 (medium)


Published Nov 1, 2023
Updated: Jan 25, 2024
CWE ID 244


CVE-2023-20031 is a vulnerability in the SSL/TLS certificate handling of Snort 3 Detection Engine integration with Cisco Firepower Threat Defense (FTD) Software. It can be exploited by an unauthenticated, remote attacker to cause the Snort 3 detection engine to restart. The vulnerability occurs when an SSL/TLS certificate under load is accessed during an SSL connection initiation. If certain time-based constraints are met, the attacker can send a high rate of SSL/TLS connection requests, resulting in either a bypass or a denial of service (DoS) condition. The affected products include various Cisco Firepower Threat Defense software versions. The issue has a medium severity rating and requires no privileges or user interaction for exploitation. Remediation may involve updating the affected software to a fixed version provided by Cisco.

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