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CVE-2011-2581

Status Candidate

Overview

The ACL implementation in Cisco NX-OS 5.0(2) and 5.0(3) before 5.0(3)N2(1) on Nexus 5000 series switches, and NX-OS before 5.0(3)U1(2a) on Nexus 3000 series switches, does not properly handle comments in conjunction with deny statements, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances by sending packets, aka Bug IDs CSCto09813 and CSCtr61490.

Related Files

Cisco Security Advisory 20110907-nexus
Posted Sep 8, 2011
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability exists in Cisco Nexus 5000 and 3000 Series Switches that may allow traffic to bypass deny statements in access control lists (ACLs) that are configured on the device. Cisco has released free software updates that address this vulnerability. A workaround is available to mitigate this vulnerability.

tags | advisory
systems | cisco
advisories | CVE-2011-2581
SHA-256 | e3a02e16068641fe05c51a6feb47b46b3a39ff777fed234371844bafb467a431
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