Resource exhaustion in Cisco Firepower Threat Defense Software
CVE-2024-20351
A vulnerability in the TCP/IP traffic handling function of the Snort Detection Engine of Cisco Firepower Threat Defense (FTD) Software and Cisco FirePOWER Services could allow an unauthenticated, remote attacker to cause legitimate network traffic to be dropped, resulting in a denial of service (DoS) condition. This vulnerability is due to the improper handling of TCP/IP network traffic. An attacker could exploit this vulnerability by sending a large amount of TCP/IP network traffic through the affected device. A successful exploit could allow the attacker to cause the Cisco FTD device to drop network traffic, resulting in a DoS condition. The affected device must be rebooted to resolve the DoS condition.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.007 (51.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Firepower Threat Defense Software — versions 6.2.3.14, 6.4.0.1, 6.2.3.7
- Cisco Firepower_threat_defense_software — versions 6.2.3, 6.2.3.1, 6.2.3.2
- Cisco Secure_firewall_threat_defense — versions 6.2.3, 6.2.3.1, 6.2.3.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (Vendor Advisory)
- psirt@cisco.com (Broken Link)
- psirt@cisco.com (Vendor Advisory)
- psirt@cisco.com (Broken Link)
Frequently asked questions
- What is CVE-2024-20351?
- CVE-2024-20351 is a high-severity vulnerability in Cisco Firepower Threat Defense Software, classified under Uncontrolled Resource Consumption. CVSS score: 8.6/10. Published 2024-10-23.
- How severe is CVE-2024-20351?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2024-20351 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.