This vulnerability is currently undergoing analysis and not all information is available.
Please check back soon to view the completed vulnerability summary.

Firefox and 2.0 allows remote attackers to cause a denial of service (crash) by creating a range object using createRange, calling selectNode on a DocType node (DOCUMENT_TYPE_NODE), then calling createContextualFragment on the range, which triggers a null dereference. NOTE: the original Bugtraq post mentioned that code execution was possible, but as of 20061031, best available information suggests that it is only a null dereference.