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Secunia Advisory SA12251

Cfengine RSA Authentication Vulnerabilities
Secunia Advisory SA12251
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Release Date 2004-08-10
Last Update 2005-02-22
   
Popularity 8,367 views
Comments 0 comments

Criticality level Moderately criticalModerately critical
Impact DoS
System access
Where From local network
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Software:
Cfengine 2.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2004-1701 CVSS available in Customer Area
CVE-2004-1702 CVSS available in Customer Area
  

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 in Customer Area

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

Changelog
Further details available in Customer Area

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

Deep Links
Links available in Customer Area


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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