CVE-2004-0004 json
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…
published 2004-02-17 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0004
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.1%
- EPSS 2.1% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- securityfocus.com/bid/9435 advisory
- openca.org/news/CAN-2004-0004.txt advisory
Exploit prediction
2.09% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
References
-
securityfocus.com
/bid/9435
vdb-entry, patch, vendor-advisory
-
openca.org
/news/CAN-2004-0004.txt
patch, vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/14847
vdb-entry
-
osvdb.org
/3615
vdb-entry
-
kb.cert.org
/vuls/id/336446
third-party-advisory, us-government-resource
-
marc.info
/?l=bugtraq&m=107427313700554&w=2
mailing-list
Sources
- CVE List CVE-2004-0004
- NVD CVE-2004-0004
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.