CVE-2024-20342
MediumCVSS 5.8Exploitation Probability (EPSS)
Low risk42th percentile - higher than 42% of all known CVEs
Summary
A vulnerability in the rate filtering feature of the Snort detection engine in multiple Cisco products could allow an unauthenticated, remote attacker to bypass a configured rate limiting filter. This is due to an incorrect connection count comparison. An attacker could send traffic exceeding the rate filter to bypass it, allowing unintended traffic into the protected network.
Risk Assessment
Bypassing the rate filter may allow an attacker to overwhelm the network or introduce malicious traffic, potentially causing disruptions and security breaches.
Recommendation
Install Cisco updates for products using the Snort engine. Review rate filter configurations and consider additional traffic limiting mechanisms.
Other vulnerabilities in Snort detection engine
Original NVD description (English source)
Multiple Cisco products are affected by a vulnerability in the rate filtering feature of the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured rate limiting filter. This vulnerability is due to an incorrect connection count comparison. An attacker could exploit this vulnerability by sending traffic through an affected device at a rate that exceeds a configured rate filter. A successful exploit could allow the attacker to successfully bypass the rate filter. This could allow unintended traffic to enter the network protected by the affected device.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS