Security Advisory SA37710 - Cisco ASA WebVPN Bookmark URLs Security Bypass

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Secunia Advisory SA37710

Cisco ASA WebVPN Bookmark URLs Security Bypass

Secunia Advisory

SA37710

Release Date

2009-12-17

Last Update

2009-12-31

Popularity

4,475 views

Comments

0 comments

Criticality level

Less critical

Impact

Security Bypass

Where

From remote

Authentication level

This information is available to Secunia VIM customers

Report reliability

This information is available to Secunia VIM customers

Solution Status

Vendor Workaround

3rd party PoC/exploit

Link available in Customer Area

Systems affected

This information is available to Secunia VIM customers

Approve distribution

This information is available to Secunia VIM customers

Operating System

Cisco Adaptive Security Appliance (ASA) 7.x

Cisco Adaptive Security Appliance (ASA) 8.2

Secunia CVSS Score

This information is available to Secunia VIM Customers

CVE Reference(s)

CVE-2009-4455 CVSS score available to Secunia VIM customers

Description

David Eduardo Acosta Rodriguez has reported a security issue in Cisco ASA, which can be exploited by malicious users to bypass certain security restrictions.

The security issue is caused due to the appliance allowing administrators the option to limit web access via the VPN through obfuscated bookmark URLs. This can be exploited to access apparently restricted URLs obfuscated using the ROT13 cipher.

Solution
Apply web access control lists to group-policies and Dynamic Access Policies. Please see the vendor's advisory for details.

Provided and/or discovered by
David Eduardo Acosta Rodriguez, ISecAuditors

Changelog
Further details available to Secunia VIM customers

Original Advisory
ISecAuditors:
http://archives.neohapsis.com/archives/fulldisclosure/2009-12/0385.html

Cisco:
http://tools.cisco.com/security/center/viewAlert.x?alertId=19609

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 ASA WebVPN Bookmark URLs Security Bypass

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Secunia Advisory SA37710

Cisco ASA WebVPN Bookmark URLs Security Bypass

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