Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2011-2581

Severity CVSS v4.0:
Pending analysis
Type:
CWE-264 Permissions, Privileges, and Access Control
Publication date:
14/09/2011
Last modified:
11/04/2025

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.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:cisco:nx-os:5.0\(2\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:nx-os:5.0\(3\)n1\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:nx-os:5.0\(3\)n1\(1a\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:nx-os:5.0\(3\)n1\(1b\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:5.0\(3\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:5.0\(3\)n1\(1c\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_5000:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 5.0\(3\)u1\(2\) (including)
cpe:2.3:o:cisco:nx-os:5.0\(3\)u1\(1a\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:5.0\(3\)u1\(1b\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:5.0\(3\)u1\(1d\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3000:*:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools