CVE Catalog

CVE-2024-20363

MediumCVSS 5.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.37%

29th percentile - higher than 29% of all known CVEs

Summary

A vulnerability in the Snort Intrusion Prevention System (IPS) rule engine affects multiple Cisco products and could allow an unauthenticated, remote attacker to bypass configured rules. The issue is due to incorrect HTTP packet handling.

Risk Assessment

An attacker could send crafted HTTP packets, allowing bypass of IPS rules and uninspected traffic onto the network, increasing the risk of attacks.

Recommendation

Apply Cisco updates for affected products. Monitor HTTP traffic for anomalies.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS