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

Severity
Medium 5.8
CVSS 3.1
Exploited
Not listed
EPSS
0.004
36.9th percentile
Discovered by
Third party
Published by the vendor
Published
Jan 26, 2024
Assigned by cisco

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 affected versions (1)
  • Cisco · Cisco Small Business Smart and Managed Switches