Cisco Firepower Threat Defense Software Snort 3 HTTP Intrusion Prevention System Rule Bypass (cisco-sa-snort3-ips-bypass-uE69KBMd)

medium Nessus Plugin ID 198228

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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.

- Multiple Cisco products are affected by a vulnerability in the Snort Intrusion Prevention System (IPS) rule engine that could allow an unauthenticated, remote attacker to bypass the configured rules on an affected system. This vulnerability is due to incorrect HTTP packet handling. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass configured IPS rules and allow uninspected traffic onto the network.
(CVE-2024-20363)

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 CSCwh22565, CSCwh73244

Plugin Details

Severity: Medium

ID: 198228

File Name: cisco-sa-snort3-ips-bypass-uE69KBMd-ftd.nasl

Version: 1.1

Type: local

Family: CISCO

Published: 5/31/2024

Updated: 5/31/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2024-20363

CVSS v3

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/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: 5/22/2024

Vulnerability Publication Date: 5/22/2024

Reference Information

CVE: CVE-2024-20363

CWE: 290

CISCO-SA: cisco-sa-snort3-ips-bypass-uE69KBMd

IAVA: 2024-A-0314

CISCO-BUG-ID: CSCwh22565, CSCwh73244

Detections

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