Cisco NX-OS up to 5.x Access Restriction access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Cisco NX-OS up to 5.x and classified as critical. Impacted is an unknown function of the component Access Restriction. The manipulation leads to access control. This vulnerability is documented as CVE-2011-2581. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cisco NX-OS up to 5.x (Router Operating System). It has been rated as critical. This issue affects an unknown part of the component Access Restriction. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality. The summary by CVE is:

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.

The weakness was released 09/14/2011 with Cisco (Website). The advisory is shared at securitytracker.com. The identification of this vulnerability is CVE-2011-2581. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 5.0%283%29 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (69639), SecurityFocus (BID 49490†), SecurityTracker (ID 1026019†) and Vulnerability Center (SBV-32995†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: NX-OS 5.0%283%29

Timelineinfo

06/27/2011 🔍
09/07/2011 +72 days 🔍
09/07/2011 +0 days 🔍
09/11/2011 +4 days 🔍
09/14/2011 +3 days 🔍
09/14/2011 +0 days 🔍
03/23/2015 +1286 days 🔍
08/06/2024 +3423 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: securitytracker.com⛔
Organization: Cisco
Status: Not defined

CVE: CVE-2011-2581 (🔍)
GCVE (CVE): GCVE-0-2011-2581
GCVE (VulDB): GCVE-100-58481
X-Force: 69639
SecurityFocus: 49490 - Cisco Nexus 5000 and 3000 Series Switches ACL Security Bypass Vulnerability
Secunia: 45883
SecurityTracker: 1026019
Vulnerability Center: 32995 - [cisco-sa-20110907-nexus] Cisco Nexus 5000 and 3000 Switches ACL Bypass Vulnerability, Medium

Entryinfo

Created: 03/23/2015 16:50
Updated: 08/06/2024 01:35
Changes: 03/23/2015 16:50 (51), 03/31/2017 12:08 (9), 11/18/2021 20:45 (4), 08/06/2024 01:35 (16)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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