CVE-2024-20342

Description

Multiple Cisco products are affected by a vulnerability in the rate filtering feature of the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured rate limiting filter.  This vulnerability is due to an incorrect connection count comparison. An attacker could exploit this vulnerability by sending traffic through an affected device at a rate that exceeds a configured rate filter. A successful exploit could allow the attacker to successfully bypass the rate filter. This could allow unintended traffic to enter the network protected by the affected device.

CVSS v3.1 Score

5.8

MEDIUM

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

Weakness Type (CWE)

CWE-1025 CWE-1025

Affected Products

Vendor	Product	Versions
cisco	snort	3.0.0.0 — 3.1.74.0
cisco	firepower_threat_defense_software	< 7.0.6.2
cisco	firepower_threat_defense_software	7.2.0 — 7.2.6
cisco	firepower_threat_defense_software	7.4.0 — 7.4.2
cisco	firepower_threat_defense_software	All
cisco	firepower_threat_defense_software	All

References

Advisories & Patches

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-rf-bypass-OY8f3pnM

Frequently Asked Questions

What is CVE-2024-20342? +

Multiple Cisco products are affected by a vulnerability in the rate filtering feature of the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured rate limiting filter.  This vulnerability is due to an incorrect connection count comparison. An attacker could exploit this vulnerability by sending traffic through an affected device at a rate that exceeds a configured rate filter. A successful exploit could allow the attacker to successfully bypass the rate filter. This could allow unintended traffic to enter the network protected by the affected device. It has a CVSS v3.1 base score of 5.8 (MEDIUM).

How severe is CVE-2024-20342? +

CVE-2024-20342 has a CVSS v3.1 score of 5.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-20342? +

CVE-2024-20342 affects products from cisco, specifically: firepower_threat_defense_software, snort. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-20342? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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