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Secunia Advisory SA18141

Cisco Secure Access Control Server Downloadable IP Access Control List Vulnerability
Secunia Advisory SA18141
Secunia VIM 4.0 - Free Trial
Release Date 2006-01-03
   
Popularity 16,812 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact Security Bypass
Where From local network
Authentication level This information is available to Secunia VIM customers
   
Report reliability This information is available to Secunia VIM customers
Solution Status Partial Fix
   
Systems affected This information is available to Secunia VIM customers
Approve distribution This information is available to Secunia VIM customers
   
Operating System
Cisco PIX 6.x
Cisco PIX 7.x
Cisco VPN 3000 Concentrator
Cisco VPN 3002 Hardware Client 3.x

Software:
Cisco Firewall Services Module (FWSM) 1.x
Cisco Firewall Services Module (FWSM) 2.x
Cisco Secure ACS 3.x

Secunia CVSS Score This information is available to Secunia VIM Customers
CVE Reference(s) No CVE references.

  

Description

ovt has reported a vulnerability in Cisco Secure ACS (Access Control Server), which potentially can be exploited by malicious people to bypass certain security restrictions.

The vulnerability is caused due to a design error in the Downloadable IP ACL (Access Control List) feature. This can be exploited by malicious people who knows the name of a Downloadable IP ACL configured on the ACS server to authenticate to the RAS/NAS (Remote Access Server/Network Access Server) by using the name of that ACL as their user name.

Successful exploitation requires that the attacker knows the name of the Downloadable IP ACL e.g. by sniffing network traffic between the RAS/NAS and the ACS server.


Solution
The vulnerability has been fixed in the following versions.
Further details available to Secunia VIM customers

Provided and/or discovered by
ovt

Original Advisory
Cisco:
http://www.cisco.com/en/US/products/sw/secursw/ps2086/products_field_notice09186a00805bf1c4.shtml

Deep Links
Links available to Secunia VIM customers


Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Cisco Secure Access Control Server Downloadable IP Access Control List Vulnerability
 
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