CVE-2004-0004

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2004-02-17 · updated 2026-06-16

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.

Affected products

Openca: through 0.9.1.6

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.osvdb.org/3615
http://www.securityfocus.com/bid/9435
https://exchange.xforce.ibmcloud.com/vulnerabilities/14847
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.osvdb.org/3615
http://www.securityfocus.com/bid/9435
https://exchange.xforce.ibmcloud.com/vulnerabilities/14847

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