XSS in the Upload Poster feature using an SVG image · streamaserver/streama#1088

(0 留言) (1 反應) (0 負責人)JavaScript (9,565 star) (977 fork)batch import

BugHelp wanted

描述

If uploading a SVG file in the poster file browser containing a script tag, this script tag will be executed when opening the file. example file:

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

<svg version="1.1" baseProfile="full" xmlns="http://www.w3.org/2000/svg" id="mysvg">
<script>
alert(document.cookie);
</script>
</svg>

貢獻者指南

技術棧: javascripthtml
領域: securityfrontend
議題類型: bug
難度: 3
預計時間: 1-3 hours
活動狀態: stale
清晰度: clear
前置要求: Basic knowledge of XSSUnderstanding of file upload handling
新手友善度: 70
研究方向: Investigate the file upload endpoint in the Grails controller (likely in a controller like FileController.groovy). Implement validation to reject SVG files containing script tags or strip scripts from uploaded SVGs. Alternatively, consider disallowing SVG uploads entirely. Ensure the fix is tested.