Unauth Remote ACL Bypass on Cisco NX-OS Port-Channel Subinterfaces
CVE-2024-20291 Published on February 29, 2024
A vulnerability in the access control list (ACL) programming for port channel subinterfaces of Cisco Nexus 3000 and 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, remote attacker to send traffic that should be blocked through an affected device. This vulnerability is due to incorrect hardware programming that occurs when configuration changes are made to port channel member ports. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to access network resources that should be protected by an ACL that was applied on port channel subinterfaces.
Vulnerability Analysis
CVE-2024-20291 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is an Authorization Vulnerability?
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CVE-2024-20291 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2024-20291
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Affected Versions
Cisco NX-OS Software:- Version 9.3(10) is affected.
- Version 9.3(11) is affected.
- Version 9.3(12) is affected.
- Version 9.3\(10\) is affected.
- Version 9.3\(11\) is affected.
- Version 9.3\(12\) is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.