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CVE-2004-0765
The cert_TestHostName function in Mozilla before 1.7, Firefox before 0.9, and Thunderbird before 0.7, only checks the hostname portion of…
High7.5EPSS 1.0%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The cert_TestHostName function in Mozilla before 1.7, Firefox before 0.9, and Thunderbird before 0.7, only checks the hostname portion of a certificate when the hostname portion of the URI is not a fully qualified domain name (FQDN), which allows remote attackers to spoof trusted certificates.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 1.0% · top 36% of all CVEs (2 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (7)
- http://bugzilla.mozilla.org/show_bug.cgi?id=234058 (opens in a new tab)x_refsource_CONFIRMx_transferred
- oval:org.mitre.oval:def:11162 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- SUSE-SA:2004:036 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- RHSA-2004:421 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- mozilla-certtesthostname-certificate-spoof(16868) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://www.mozilla.org/projects/security/known-vulnerabilities.html#mozilla1.7 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FLSA:2089 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .