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Check Point VPN-1 SecureClient Secure Configuration Verification Bypass Weakness

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Release Date:  2005-12-08    Views:  18,141

Secunia Advisory SA17837

Where:

Local system

Impact:

Security Bypass

Solution Status:

Unpatched

CVE Reference(s):

No CVE references.

Description


Viktor Steinmann has reported a weakness in Check Point VPN-1 SecureClient, which potentially can be exploited by malicious users to bypass certain security restrictions.

The weakness is caused due to SecureClient relying on the local copy of the "local.scv" file downloaded from the policy server to perform client integrity checks before allowing the client to connect to the internal networks via VPN. This check may be bypassed by users with write-access to the file by continuously replacing it with a modified copy.

This weakness can potentially allow the SCV (Secure Configuration Verification) feature of the product to be bypassed, which allow client systems that are not compliant to the organisation's security policies to connect to the internal networks.


Solution:
Do not rely on the SCV as the only means of ensuring that client systems are configured according to the security policy.

Provided and/or discovered by:
Viktor Steinmann

Original Advisory:
http://lists.grok.org.uk/pipermail/full-disclosure/2005-December/039634.html

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: Check Point VPN-1 SecureClient Secure Configuration Verification Bypass Weakness

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