DoS by Dropped Traffic in Cisco FTD Snort Engine
CVE-2024-20351 Published on October 23, 2024

Cisco Firepower Threat Defense Software Snort Firewall Denial of Service Vulnerability
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.

NVD

Vulnerability Analysis

CVE-2024-20351 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
CHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

What is a Resource Exhaustion Vulnerability?

The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

CVE-2024-20351 has been classified to as a Resource Exhaustion vulnerability or weakness.


Products Associated with CVE-2024-20351

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2024-20351 are published in these products:

Cisco Firepower Threat Defense Software
 
Cisco Firepower Threat Defense
 

Affected Versions

Cisco Firepower Threat Defense Software: cisco firepower_threat_defense_software:

Exploit Probability

EPSS
0.83%
Percentile
74.27%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.