CVE-2024-20321

HIGH
Published Feb 29, 2024 Modified Nov 21, 2024 CWE-400 CWE-770

Description

A vulnerability in the External Border Gateway Protocol (eBGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because eBGP traffic is mapped to a shared hardware rate-limiter queue. An attacker could exploit this vulnerability by sending large amounts of network traffic with certain characteristics through an affected device. A successful exploit could allow the attacker to cause eBGP neighbor sessions to be dropped, leading to a DoS condition in the network.

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CVSS v3.1 Score

8.6
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption
CWE-770 CWE-770

Affected Products

Vendor Product
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os
cisco nx-os

References

Frequently Asked Questions

What is CVE-2024-20321? +
A vulnerability in the External Border Gateway Protocol (eBGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because eBGP traffic is mapped to a shared hardware rate-limiter queue. An attacker could exploit this vulnerability by sending large amounts of network traffic with certain characteristics through an affected device. A successful exploit could allow the attacker to cause eBGP neighbor sessions to be dropped, leading to a DoS condition in the network. It has a CVSS v3.1 base score of 8.6 (HIGH).
How severe is CVE-2024-20321? +
CVE-2024-20321 has a CVSS v3.1 score of 8.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-20321? +
CVE-2024-20321 affects products from cisco, specifically: nx-os. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-20321? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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