Mozilla Firefox 0.9 authentication spoofing

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability classified as critical has been found in Mozilla Firefox 0.9 (Web Browser). Affected is an unknown code. The manipulation with an unknown input leads to a authentication spoofing vulnerability. CWE is classifying the issue as CWE-290. This attack-focused weakness is caused by improperly implemented authentication schemes that are subject to spoofing attacks. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 07/30/2004. The weakness was shared 07/30/2004 by James Ross and Jérôme Athias (Website). The advisory is available at This vulnerability is traded as CVE-2004-0764 since 08/02/2004. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are unknown but an exploit is available.

It is declared as proof-of-concept. The exploit is shared for download at As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 18982 (FreeBSD : Mozilla / Firefox user interface spoofing vulnerability (730db824-e216-11d8-9b0a-000347a4fa7d)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115047 (Sun Solaris Mozilla Multiple Vulnerabilities).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (16837), Vulnerability Center (SBV-7542) and Tenable (18982). Further details are available at The entries 744, 759, 773 and 775 are related to this item.






  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
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Class: Authentication spoofing
CWE: CWE-290 / CWE-287
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept
Download: 🔍

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Nessus ID: 18982
Nessus Name: FreeBSD : Mozilla / Firefox user interface spoofing vulnerability (730db824-e216-11d8-9b0a-000347a4fa7d)
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OpenVAS ID: 53919
OpenVAS Name: Slackware Advisory SSA:2004-223-01 Mozilla
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

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07/30/2004 🔍
07/30/2004 +0 days 🔍
07/30/2004 +0 days 🔍
07/30/2004 +0 days 🔍
07/30/2004 +0 days 🔍
07/30/2004 +0 days 🔍
08/02/2004 +2 days 🔍
08/03/2004 +1 days 🔍
08/18/2004 +15 days 🔍
08/18/2004 +0 days 🔍
04/11/2005 +236 days 🔍
07/13/2005 +93 days 🔍
06/28/2019 +5098 days 🔍



Researcher: James Ross/Jérôme Athias
Status: Not defined
Confirmation: 🔍

CVE: CVE-2004-0764 (🔍)

X-Force: 16837 - Mozilla and Firefox user interface spoofing, Medium Risk
Vulnerability Center: 7542 - Mozilla Allows Remote Web Sites to Hijack User Interface, Medium
SecurityFocus: 10832 - Mozilla Firefox XML User Interface Language Browser Interface Spoofing Vulnerability
Secunia: 12188 - Mozilla / Mozilla Firefox User Interface Spoofing Vulnerability, Moderately Critical
OSVDB: 8311 - Mozilla Browsers chrome/XML User Interface Spoofing

Misc.: 🔍
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Created: 08/03/2004 10:44 AM
Updated: 06/28/2019 10:29 PM
Changes: 08/03/2004 10:44 AM (99), 06/28/2019 10:29 PM (1)
Complete: 🔍


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