Detections
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Cisco Firepower Threat Defense Software Snort 3 Geolocation IP Filter Bypass (cisco-sa-ftdsnort3sip-bypass-LMz2ThKn)

medium Nessus Plugin ID 234502

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco Firepower Threat Defense (FTD) Software is affected by a vulnerability.

 - A vulnerability in the IP geolocation rules of Snort 3 could allow an unauthenticated, remote attacker to potentially bypass IP address restrictions. This vulnerability exists because the configuration for IP geolocation rules is not parsed properly. An attacker could exploit this vulnerability by spoofing an IP address until they bypass the restriction. A successful exploit could allow the attacker to bypass location-based IP address restrictions. (CVE-2023-20267)

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

Solution

Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCwe69833

See Also

http://www.nessus.org/u?89c08cab

Plugin Details

Severity: Medium

ID: 234502

File Name: cisco-sa-ftdsnort3sip-bypass-LMz2ThKn.nasl

Version: 1.1

Type: local

Family: CISCO

Published: 4/16/2025

Updated: 4/16/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

CVSS Score Source: CVE-2023-20267

CVSS v3

Risk Factor: Medium

Base Score: 4

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

Vulnerability Information

CPE: cpe:/a:cisco:firepower_threat_defense

Required KB Items: installed_sw/Cisco Firepower Threat Defense

Patch Publication Date: 11/1/2023

Vulnerability Publication Date: 11/1/2023

Reference Information

CVE: CVE-2023-20267