SB2024012482 - ACL bypass in Cisco Small Business Series Switches
Published: January 24, 2024
Security Bulletin ID
SB2024012482
Severity
Medium
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-2024-20263)
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to incorrect processing of ACLs on a stacked configuration when either the primary or backup switches experience a full stack reload or power cycle. A remote attacker can send specially crafted traffic through the device to bypass configured ACLs, causing traffic to be dropped or forwarded in an unexpected manner.
Remediation
Install update from vendor's website.