Mozilla · Firefox · CVE-2006-1993
**Name of the Vulnerable Software and Affected Versions**
Mozilla Firefox version 1.5.0.2
**Description**
The issue 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. This occurs when designMode is enabled, causing a reference to a deleted controller context object.
**Recommendations**
For Mozilla Firefox version 1.5.0.2, consider disabling the designMode feature as a temporary workaround until a patch is available. Restrict access to iframes with enabled designMode to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.