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CVE-2024-20363

Published: May 22, 2024Updated: Jul 3, 2025 Sources: CVE List NVD BDUCWE-290
NVD MITRE
5.8CVSSMEDIUM
EPSS Score
0.4%
Top 71.8%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-290

Affected Products

firepower threat defenseciscoNetworking Infrastructure
unified threat defense snort intrusion prevention system engineciscoNetworking Infrastructure
snortciscoNetworking Infrastructure
Firepower Threat DefenseCisco Systems Inc.Networking Infrastructure
SnortCisco Systems Inc.Networking Infrastructure
ciscocommercialUSNetworking Infrastructureaka cisco systems, cisco systems inc.
cisco systems inc.commercialUSNetworking Infrastructureaka cisco systems, cisco
and 3 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-ips-bypass-uE69KBMd
sec.cloudapps.cisco.com

Timeline

Published
May 22, 2024
Last Updated
Jul 3, 2025

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