vulnerability

Cisco IOS-XR: CVE-2023-20191: Cisco IOS XR Software Access Control List Bypass Vulnerability

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
Sep 13, 2023
Added
Sep 14, 2023
Modified
Nov 4, 2024

Description

A vulnerability in the access control list (ACL) processing on MPLS 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 incomplete support for this feature. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.

There are workarounds that address this vulnerability.

This advisory is part of the September 2023 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2023 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication .

Solution

update-xros
Title
NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.