Concurrency vulnerability in Mozilla Firefox and Netscape browsers

CVE-2006-4253

Summary

This vulnerability arises from a concurrency issue in Mozilla Firefox and various other browsers, which allows attackers to exploit multiple JavaScript timed events that load deeply nested XML files. This can lead to a precarious state where the browser may crash or, in some instances, allow arbitrary code execution. The flaw manifests when the browser is redirected to another page, resulting in a failure to manage internal data structures correctly. Reports have confirmed that this issue also affects versions of Netscape and K-Meleon, with exploitation demonstrated through tools such as ffoxdie.

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