--- title: "CVE-2006-1993\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-2006-1993?format=md keywords: index, follow --- # CVE-2006-1993 Publication date 25 April 2006 Last updated 17 July 2025 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description Mozilla Firefox 1.5.0.2, when designMode is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code via certain Javascript that is not properly handled by the contentWindow.focus method in an iframe, which causes a reference to a deleted controller context object. NOTE: this was originally claimed to be a buffer overflow in (1) js320.dll and (2) xpcom\_core.dll, but the vendor disputes this claim. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | firefox | 7.04 feisty | Fixed 2.0.0.6+1-0ubuntu1 | | 6.10 edgy | Fixed 2.0.0.6+0dfsg-0ubuntu0.6.10 | | 6.06 LTS dapper | Fixed 1.5.dfsg+1.5.0.13~prepatch070731-0ubuntu1 | | firefox-granparadiso | 7.04 feisty | Not in release | | 6.10 edgy | Not in release | | 6.06 LTS dapper | Not in release | | lightning-sunbird | 7.04 feisty | Not in release | | 6.10 edgy | Not in release | | 6.06 LTS dapper | Not in release | | midbrowser | 7.04 feisty | Not in release | | 6.10 edgy | Not in release | | 6.06 LTS dapper | Not in release | --- * [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-2006-1993) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2006-1993) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2006-1993) * [Debian](https://security-tracker.debian.org/tracker/CVE-2006-1993) ### Other references *