CVE-2024-20363 Cisco Snort IPS HTTP Bypass
CVE-2024-20363 Published on May 22, 2024

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.

NVD

Vulnerability Analysis

CVE-2024-20363 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
CHANGED
Confidentiality Impact:
NONE
Integrity Impact:
LOW
Availability Impact:
NONE

Weakness Type

Authentication Bypass by Spoofing

This attack-focused weakness is caused by improperly implemented authentication schemes that are subject to spoofing attacks.


Products Associated with CVE-2024-20363

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2024-20363 are published in these products:

Cisco Firepower Threat Defense
 
Cisco Unified Threat Defense Snort Intrusion Prevention System Engine
 
Cisco Snort
 

Affected Versions

Cisco Firepower Threat Defense Software: Cisco UTD SNORT IPS Engine Software: cisco firepower_threat_defense: cisco snort_intrusion_prevention_system: cisco snort_intrusion_prevention_system: cisco snort_intrusion_prevention_system: cisco snort_intrusion_prevention_system:

Exploit Probability

EPSS
0.14%
Percentile
34.46%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.