Description
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.
References
- 1026019 vdb-entry
- 20110907 Cisco Nexus 5000 and 3000 Series Switches Access Control List Bypass Vulnerability vendor-advisory
- 45883 third-party-advisory