Several remote vulnerabilities have been discovered in Xulrunner, a runtime environment for XUL applications. The Common Vulnerabilities and Exposures project identifies the following problems: "wushi" discovered that incorrect pointer handling in the frame processing code could lead to the execution of arbitrary code. "Nils" discovered that an integer overflow in DOM node parsing could lead to the execution of arbitrary code. Ilja von Sprundel discovered that incorrect parsing of Content-Disposition headers could lead to cross-site scripting. Microsoft engineers discovered that incorrect memory handling in the interaction of browser plugins could lead to the execution of arbitrary code. Martin Barbella discovered that an integer overflow in XSLT node parsing could lead to the execution of arbitrary code. Olli Pettay, Martijn Wargers, Justin Lebar, Jesse Ruderman, Ben Turner, Jonathan Kew and David Humphrey discovered crashes in the layout engine, which might allow the execution of arbitrary code. "boardraider" and "stedenon" discovered crashes in the layout engine, which might allow the execution of arbitrary code. Bob Clary, Igor Bukanov, Gary Kwong and Andreas Gal discovered crashes in the Javascript engine, which might allow the execution of arbitrary code.