From: Secunia Security Advisories (sec-advsecunia.com)
Date: Tue Jan 20 2004 - 02:32:55 CST

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TITLE:
OpenCA libCheckSignature Signature Validation Vulnerability

SECUNIA ADVISORY ID:
SA10664

VERIFY ADVISORY:
http://www.secunia.com/advisories/10664/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass

WHERE:
From remote

SOFTWARE:
OpenCA 0.x

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

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