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Insecure Library Loading
Moderately critical

Cfengine RSA Authentication Vulnerabilities

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Release Date:  2004-08-10    Last Update:  2005-02-22    Views:  9,073

Secunia Advisory SA12251

Where:

From local network

Impact:

DoS, System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Juan Pablo Martinez Kuhn has discovered two vulnerabilities in Cfengine, allowing malicious people to compromise the system or cause a DoS (Denial of Service).

The vulnerabilities are caused due to insufficient input validation and a boundary error in the cfservd daemon when processing authentication requests. The problems lies in the "AuthenticationDialogue()" function, which is responsible for performing RSA authentication and key agreement.

This can be exploited to cause a heap-based buffer overflow and thereby execute arbitrary code.

The vulnerabilities reportedly affect Cfengine 2.0.0 to 2.1.7p1.


Solution:
Update to version 2.1.8.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Juan Pablo Martinez Kuhn, Core Security Technologies.

Original Advisory:
http://www.coresecurity.com/common/showdoc.php?idx=387&idxseccion=10

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: Cfengine RSA Authentication Vulnerabilities

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