漏洞信息
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Vulnerability Title
PrivateBin: Stored Cross-Side-Scripting (XSS) vulnerability in attachment download link via dangerous MIME types with required user-interaction
Vulnerability Description
PrivateBin is an online pastebin where the server has zero knowledge of pasted data. Prior to 2.0.5, AttachmentViewer.setAttachment in js/privatebin.js uses getAttachmentMimeType to accept attacker-controlled MIME types and uses getBlobUrl to create a same-origin blob before setting attachmentLink's href for the Download attachment link. The SVG-only sanitization branch updates only the preview blob, so text/html, image/svg, application/xhtml+xml, and text/xml attachments can remain active in the download blob. On an instance with fileupload = true and a weakened, stripped, or absent Content Security Policy, an anonymous attacker can create such an attachment, and a victim who opens the link in a new tab causes inline JavaScript to execute in the PrivateBin origin. The script can read origin-scoped local storage and issue same-origin requests, including requests to applications co-hosted on the same domain. This issue is fixed in version 2.0.5.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Vulnerability Title
PrivateBin 跨站脚本漏洞
Vulnerability Description
PrivateBin是PrivateBin团队开源的一款注重隐私的在线粘贴板工具。 PrivateBin 2.0.5之前版本存在跨站脚本漏洞,该漏洞源于js/privatebin.js中AttachmentViewer.setAttachment函数使用getAttachmentMimeType接受攻击者控制的MIME类型并创建同源blob,导致下载附件中可执行内联JavaScript,可能造成跨站脚本攻击。
CVSS Information
N/A
Vulnerability Type
N/A