Several vulnerabilities have been discovered in webkit, a Web content engine library for Gtk+. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2010-1783 WebKit does not properly handle dynamic modification of a text node, which allows remote attackers to execute arbitrary code or cause a denial of service via a crafted HTML document. CVE-2010-2901 The rendering implementation in WebKit allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors. CVE-2010-4199 WebKit does not properly perform a cast of an unspecified variable during processing of an SVG use element, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted SVG document. CVE-2010-4040 WebKit does not properly handle animated GIF images, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted image. CVE-2010-4492 Use-after-free vulnerability in WebKit allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors involving SVG animations. CVE-2010-4493 Use-after-free vulnerability in Webkit allows remote attackers to cause a denial of service via vectors related to the handling of mouse dragging events CVE-2010-4577 The CSSParser::parseFontFaceSrc function in WebCore/css/CSSParser.cpp in WebKit does not properly parse Cascading Style Sheets token sequences, which allows remote attackers to cause a denial of service via a crafted local font, related to "Type Confusion." CVE-2010-4578 WebKit does not properly perform cursor handling, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors that lead to "stale pointers." CVE-2011-0482 WebKit does not properly perform a cast of an unspecified variable during handling of anchors, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted HTML document CVE-2011-0778 WebKit does not properly restrict drag and drop operations, which might allow remote attackers to bypass the Same Origin Policy via unspecified vectors.