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Silverstripe CMS through 4.5 can be susceptible to script execution from malicious upload contents under allowed file extensions (for example HTML code in a TXT file). When these files are stored as protected or draft files, the MIME detection can cause browsers to execute the file contents. Uploads stored as protected or draft files are allowed by default for authorised users only, but can also be enabled through custom logic as well as modules such as silverstripe/userforms. Sites using the previously optional silverstripe/mimevalidator module can configure MIME whitelists rather than extension whitelists, and hence prevent this issue. Sites on the Common Web Platform (CWP) use this module by default, and are not affected.

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SilverStripe 代码问题漏洞

SilverStripe是新西兰SilverStripe公司的一套开源的编程框架和内容管理系统 (CMS)。该系统具有支持多国语言、跨平台等特点。 Silverstripe 4.5及之前版本中存在安全漏洞。攻击者可借助恶意的上传内容利用该漏洞执行脚本。

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