CVE-2011-2581

Severity Score

5.0

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

La implementación de ACL en Cisco NX-OS v5.0(2) y v5.0(3) antes de 5.0(3)N2(1) en los switches Nexus serie 5000 y NX-OS antes de 5.0(3)U1(2a) en los switches Nexus serie 3000, no maneja adecuadamente los comentarios en las declaraciones negadas, lo que permite a atacantes remotos evitar las restricciones de acceso previsto en circunstancias oportunas mediante el envío de paquetes. Se trata de un problema también conocido como Bug ID CSCto09813 y CSCtr61490.

*Credits: N/A

CVSS Scores

NISTv2 5.0

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-06-27 CVE Reserved
2011-09-08 CVE Published
2023-03-07 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (3)

URL	Tag	Source
http://secunia.com/advisories/45883	Third Party Advisory
http://www.securitytracker.com/id?1026019	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml	2022-04-05

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	5.0\(2\) Search vendor "Cisco" for product "Nx-os" and version "5.0\(2\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5000 Search vendor "Cisco" for product "Nexus 5000"	*	-	Affected
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	5.0\(3\)n1\(1\) Search vendor "Cisco" for product "Nx-os" and version "5.0\(3\)n1\(1\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5000 Search vendor "Cisco" for product "Nexus 5000"	*	-	Affected
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	5.0\(3\)n1\(1a\) Search vendor "Cisco" for product "Nx-os" and version "5.0\(3\)n1\(1a\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5000 Search vendor "Cisco" for product "Nexus 5000"	*	-	Affected
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	5.0\(3\)n1\(1b\) Search vendor "Cisco" for product "Nx-os" and version "5.0\(3\)n1\(1b\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5000 Search vendor "Cisco" for product "Nexus 5000"	*	-	Affected
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	5.0\(3\) Search vendor "Cisco" for product "Nx-os" and version "5.0\(3\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5000 Search vendor "Cisco" for product "Nexus 5000"	*	-	Affected
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	5.0\(3\)n1\(1c\) Search vendor "Cisco" for product "Nx-os" and version "5.0\(3\)n1\(1c\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5000 Search vendor "Cisco" for product "Nexus 5000"	*	-	Affected
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	<= 5.0\(3\)u1\(2\) Search vendor "Cisco" for product "Nx-os" and version " <= 5.0\(3\)u1\(2\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 3000 Search vendor "Cisco" for product "Nexus 3000"	*	-	Affected
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	5.0\(3\)u1\(1a\) Search vendor "Cisco" for product "Nx-os" and version "5.0\(3\)u1\(1a\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 3000 Search vendor "Cisco" for product "Nexus 3000"	*	-	Affected
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	5.0\(3\)u1\(1b\) Search vendor "Cisco" for product "Nx-os" and version "5.0\(3\)u1\(1b\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 3000 Search vendor "Cisco" for product "Nexus 3000"	*	-	Affected
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	5.0\(3\)u1\(1d\) Search vendor "Cisco" for product "Nx-os" and version "5.0\(3\)u1\(1d\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 3000 Search vendor "Cisco" for product "Nexus 3000"	*	-	Affected