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CVE-2024-20351

HIGHCVSS 7.5/10EPSS 0.74%

Last modified

CVE-2024-20351 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.74% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
0.74%

49.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoFirepower Threat Defense Software6.2.3
CiscoFirepower Threat Defense Software6.2.3.1
CiscoFirepower Threat Defense Software6.2.3.2
CiscoFirepower Threat Defense Software6.2.3.3
CiscoFirepower Threat Defense Software6.2.3.4
CiscoFirepower Threat Defense Software6.2.3.5
CiscoFirepower Threat Defense Software6.2.3.6
CiscoFirepower Threat Defense Software6.2.3.7
CiscoFirepower Threat Defense Software6.2.3.8
CiscoFirepower Threat Defense Software6.2.3.9
CiscoFirepower Threat Defense Software6.2.3.10
CiscoFirepower Threat Defense Software6.2.3.11
CiscoFirepower Threat Defense Software6.2.3.12
CiscoFirepower Threat Defense Software6.2.3.13
CiscoFirepower Threat Defense Software6.2.3.14
CiscoFirepower Threat Defense Software6.2.3.15
CiscoFirepower Threat Defense Software6.2.3.16
CiscoFirepower Threat Defense Software6.2.3.17
CiscoFirepower Threat Defense Software6.2.3.18
CiscoFirepower Threat Defense Software6.4.0
CiscoFirepower Threat Defense Software6.4.0.1
CiscoFirepower Threat Defense Software6.4.0.2
CiscoFirepower Threat Defense Software6.4.0.3
CiscoFirepower Threat Defense Software6.4.0.4
CiscoFirepower Threat Defense Software6.4.0.5
CiscoFirepower Threat Defense Software6.4.0.6
CiscoFirepower Threat Defense Software6.4.0.7
CiscoFirepower Threat Defense Software6.4.0.8
CiscoFirepower Threat Defense Software6.4.0.9
CiscoFirepower Threat Defense Software6.4.0.10
CiscoFirepower Threat Defense Software6.4.0.11
CiscoFirepower Threat Defense Software6.4.0.12
CiscoFirepower Threat Defense Software6.4.0.13
CiscoFirepower Threat Defense Software6.4.0.14
CiscoFirepower Threat Defense Software6.4.0.15
CiscoFirepower Threat Defense Software6.4.0.16
CiscoFirepower Threat Defense Software6.4.0.17
CiscoFirepower Threat Defense Software6.4.0.18
CiscoFirepower Threat Defense Software6.6.0
CiscoFirepower Threat Defense Software6.6.0.1
CiscoFirepower Threat Defense Software6.6.1
CiscoFirepower Threat Defense Software6.6.3
CiscoFirepower Threat Defense Software6.6.4
CiscoFirepower Threat Defense Software6.6.5
CiscoFirepower Threat Defense Software6.6.5.1
CiscoFirepower Threat Defense Software6.6.5.2
CiscoFirepower Threat Defense Software6.6.7
CiscoFirepower Threat Defense Software6.6.7.1
CiscoFirepower Threat Defense Software6.6.7.2
CiscoFirepower Threat Defense Software6.7.0

Showing 50 of 85 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is 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.
How severe is CVE-2024-20351?
CVE-2024-20351 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.74% probability of exploitation in the next 30 days.
How do I fix CVE-2024-20351?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-20351?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST