SB2023091417 - Improper access control in Cisco IOS XR Software
Published: September 14, 2023
Security Bulletin ID
SB2023091417
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper access control (CVE-ID: CVE-2023-20191)
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to incomplete support in the access control list (ACL) processing on MPLS interfaces in the ingress direction. A remote attacker can bypass an ACL on the affected device.
Remediation
Install update from vendor's website.