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OpenCA libCheckSignature Signature Validation Vulnerability Advisory Available in Danish 

Secunia Advisory: SA10664  
Release Date: 2004-01-20

Critical:
Moderately critical
Impact: Security Bypass
Where: From remote
Solution Status: Vendor Patch

Software:OpenCA 0.x

CVE reference:CVE-2004-0004 (Secunia mirror)

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Description:
A vulnerability has been identified in OpenCA, which may result in an incorrect signature being accepted.

The vulnerability is caused due to a validation error in the "libCheckSignature()" function. The problem is that only the serial is compared between a certificate in the database and a signer's certificate when checking signatures.

All versions prior to 0.9.1.7 are vulnerable.

Solution:
Update to version 0.9.1.7.
http://www.openca.org/openca/download-releases.shtml

Provided and/or discovered by:
Reported by vendor.

Original Advisory:
OpenCA Security Advisory (2004-0004):
http://www.openca.org/news/CAN-2004-0004.txt

Other References:
CERT VU#336446:
http://www.kb.cert.org/vuls/id/336446



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

3 Related Secunia Security Advisories

1. OpenCA Cross-Site Request Forgery Vulnerability
2. OpenCA Web Frontend Script Insertion Vulnerability
3. OpenCA Signature Validation Vulnerabilities


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If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.

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