--- title: "CVE-2005-0233\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2005-0233?format=md keywords: index, follow --- # CVE-2005-0233 Publication date 8 February 2005 Last updated 17 July 2025 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description The International Domain Name (IDN) support in Firefox 1.0, Camino .8.5, and Mozilla before 1.7.6 allows remote attackers to spoof domain names using punycode encoded domain names that are decoded in URLs and SSL certificates in a way that uses homograph characters from other character sets, which facilitates phishing attacks. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | mozilla | 7.04 feisty | Not in release | | 6.10 edgy | Fixed 1.7.12-1.1ubuntu2 | | 6.06 LTS dapper | Fixed 1.7.12-1.1ubuntu2 | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0233) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2005-0233) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2005-0233) * [Debian](https://security-tracker.debian.org/tracker/CVE-2005-0233) ### Related Ubuntu Security Notices (USN) + [USN-149-3](https://usn.ubuntu.com/USN-149-3) + Ubuntu 4.10 update for Firefox vulnerabilities + 28 July 2005 ### Other references *