Vulnerability CVE-2004-0004
Published: 2004-02-17   Modified: 2012-02-12

Description:
The libCheckSignature function in crypto-utils.lib for OpenCA 0.9.1.6 and earlier only compares the serial of the signer's certificate and the one in the database, which can cause OpenCA to incorrectly accept a signature if the certificate's chain is trusted by OpenCA's chain directory, allowing remote attackers to spoof requests from other users.

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Openca -> Openca 

 References:
http://marc.info/?l=bugtraq&m=107427313700554&w=2
http://www.kb.cert.org/vuls/id/336446
http://www.openca.org/news/CAN-2004-0004.txt
http://www.securityfocus.com/bid/9435
http://xforce.iss.net/xforce/xfdb/14847
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