CVE-2024-20263
A vulnerability with the access control list (ACL) management within a stacked switch configuration of Cisco Business 250 Series Smart Switches and Business 350 Series Managed Switches could allow an
Description
A vulnerability with the access control list (ACL) management within a stacked switch configuration of Cisco Business 250 Series Smart Switches and Business 350 Series Managed Switches could allow an unauthenticated, remote attacker to bypass protection offered by a configured ACL on an affected device. This vulnerability is 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. An attacker could exploit this vulnerability by sending crafted traffic through an affected device. A successful exploit could allow the attacker to bypass configured ACLs, causing traffic to be dropped or forwarded in an unexpected manner. The attacker does not have control over the conditions that result in the device being in the vulnerable state. Note: In the vulnerable state, the ACL would be correctly applied on the primary devices but could be incorrectly applied to the backup devices.
Weakness: CWE-284
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Small Business Routers and Switches | Routing & Switching | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco Small Business Smart and Managed Switches
Vendor advisory
cisco-sa-sb-bus-acl-bypass-5zn9hNJk
Cisco Small Business Series Switches Stacked Reload ACL Bypass Vulnerability
Cisco’s rating: Medium (advisory CVSS 5.8) · Published Jan 24, 2024
Bug IDs: CSCwf48882 , CSCwh68993
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from