Cisco IOS XR ACL Bypass via Pseudowire Ingress
CVE-2024-20322 Published on March 13, 2024
A vulnerability in the access control list (ACL) processing on Pseudowire interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to improper assignment of lookup keys to internal interface contexts. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to access resources behind the affected device that were supposed to be protected by a configured ACL.
Vulnerability Analysis
CVE-2024-20322 is exploitable 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-2024-20322 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2024-20322
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Affected Versions
Cisco IOS XR Software:- Version 7.10.2 is affected.
- Version 7.11.1 is affected.
- Version 7.10.2 is affected.
- Version 7.11.1 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.