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CVE-2024-20363

nvd nist
Published: May 22, 2024Modified: Jul 3, 2025

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5.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Exploitability: 3.9 / Impact: 1.4
Source: psirt@cisco.com (Secondary)

Description

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.

Affected (6)

Cisco
3 products
Firepower Threat Defense
Unified Threat Defense Snort Intrusion Prevention System Engine
Snort
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Firepower Threat Defense
Version 7.4.0
Configuration B
4 vulnerable
Vulnerable SoftwareAffected Versions
Cisco
Unified Threat Defense Snort Intrusion Prevention System Engine
Version 17.12.1a
Unified Threat Defense Snort Intrusion Prevention System Engine
Version 17.12.2
Unified Threat Defense Snort Intrusion Prevention System Engine
Version 17.6.4
Unified Threat Defense Snort Intrusion Prevention System Engine
Version 17.6.5
Configuration C
1 vulnerable
Vulnerable SoftwareAffected Versions
Snort
From 3.0.0-233 to 3.1.69.0

Related CWEs

CWE-290
Authentication Bypass by Spoofing
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

References (2)

Source: psirt@cisco.com
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

Timeline

No history available yet.