A vulnerability with the access control list (ACL) management within...

5.8 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-bus-acl-bypass-5zn9hNJk

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Affected Vendor

Cisco

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Affected Software

Cisco Small Business Smart and Managed Switches

Vulnerable Versions:

2.0.0.73, 2.1.0.63, 2.2.0.63, 2.2.0.66, 2.2.5.68, 2.2.7.07, 2.2.8.04, 2.3.0.130, 2.3.5.63, 2.4.0.91, 2.4.0.94, 2.4.5.71, 2.5.0.78, 2.5.0.79, 2.5.0.82, 2.5.0.83, 2.5.0.89, 2.5.0.90, 2.5.0.92, 2.5.5.47, 2.5.7.85, 2.5.8.12, 2.5.8.15, 2.5.9.13, 2.5.9.15, 2.5.9.16, 3.0.0.61, 3.0.0.69, 3.1.0.57, 3.1.1.7, 3.2.0.84, 3.2.0.89, 3.2.1.1, 3.3.0.16