PT-2024-2337 · Cisco · Cisco Ios Xr

Published 2024-03-13 · Updated 2025-08-05 · CVE-2024-20322

Positive Technologies (AI Summary)

CVSS v3.1

5.8

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Cisco IOS XR Software (affected versions not specified)

Description A vulnerability in the access control list (ACL) processing on Pseudowire interfaces in the ingress direction could allow an unauthenticated, remote attacker to bypass a configured ACL. This issue is due to improper assignment of lookup keys to internal interface contexts. An attacker could exploit this by sending traffic through an affected device, potentially accessing resources behind the device that were supposed to be protected by a configured ACL.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

BDU:2024-02283

CVE-2024-20322

Affected Products

Cisco Ios Xr

References · 7

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-acl-bypass-RZU5NL3e · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-20322 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-02283 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-20322 · Security Note
• https://t.me/cveNotify/130911 · Telegram Post
• https://vuldb.com/?id.256738 · Note
• https://twitter.com/CVEnew/status/1767962577177284703 · Twitter Post