CVE-2024-20321

High

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.

SeverityHigh
CVSS8.6
Exploit probability—
ProductCisco Nx-os
PublishedFeb 29, 2024
First seenFeb 29, 2024

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
cisco nx-os7.0\(3\)f1\(1\), 7.0\(3\)f2\(1\), 7.0\(3\)f2\(2\), 7.0\(3\)f3\(1\), 7.0\(3\)f3\(2\), 7.0\(3\)f3\(3\), 7.0\(3\)f3\(3a\), 7.0\(3\)f3\(3c\), 7.0\(3\)f3\(4\), 7.0\(3\)f3\(5\), 9.2\(1\), 9.2\(2\), 9.2\(2t\), 9.2\(2v\), 9.2\(3\), 9.2\(4\), 9.3\(1\), 9.3\(2\), 9.3\(3\), 9.3\(4\), 9.3\(5\), 9.3\(6\), 9.3\(7\), 9.3\(7a\), 9.3\(8\), 9.3\(9\), 9.3\(10\), 9.3\(11\), 9.3\(12\), 10.1\(1\), 10.1\(2\), 10.1\(2t\), 10.2\(1\), 10.2\(1q\), 10.2\(2\), 10.2\(3\), 10.2\(3t\), 10.2\(3v\), 10.2\(4\), 10.2\(5\), 10.2\(6\), 10.3\(1\), 10.3\(2\), 10.3\(3\), 10.3\(4a\), 10.3\(99w\), 10.3\(99x\), 10.4\(1\)—

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