Multiple Cisco Products Snort Rate Filter Bypass (cisco-sa-snort-rf-bypass-OY8f3pnM)

high Nessus Plugin ID 209653

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco FTD Software is affected by a vulnerability.

- 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. (CVE-2024-20342)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCwf52284, CSCwf93293

Plugin Details

Severity: High

ID: 209653

File Name: cisco-sa-snort-rf-bypass-OY8f3pnM-ftd.nasl

Version: 1.3

Type: local

Family: CISCO

Published: 10/25/2024

Updated: 8/12/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2024-20342

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cisco:firepower_threat_defense

Required KB Items: installed_sw/Cisco Firepower Threat Defense

Exploit Ease: No known exploits are available

Patch Publication Date: 10/23/2024

Vulnerability Publication Date: 10/23/2024

Reference Information

CVE: CVE-2024-20342

CWE: 1025

CISCO-SA: cisco-sa-snort-rf-bypass-OY8f3pnM

IAVA: 2024-A-0687

CISCO-BUG-ID: CSCwf52284, CSCwf93293

Detections

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