CVE-2024-20322

2024-03-1316:43:53

cisco

www.cve.org

cve-2024-20322

access control list

cisco ios xr software

pseudowire interfaces

remote attacker

bypass

improper assignment

internal interface contexts

successful exploit

configured acl

CVSS3

5.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

Percentile

9.0%

JSON

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.

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "Cisco IOS XR Software",
    "versions": [
      {
        "version": "7.10.2",
        "status": "affected"
      },
      {
        "version": "7.11.1",
        "status": "affected"
      }
    ]
  }
]