漏洞信息
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Vulnerability Title
CefSharp: `FolderSchemeHandlerFactory` path boundary check can expose files outside the configured root folder
Vulnerability Description
CefSharp provides .NET bindings for the Chromium Embedded Framework for Windows Forms and Windows Presentation Foundation applications. Prior to version 148.0.90, CefSharp/SchemeHandler/FolderSchemeHandlerFactory.cs used filePath.StartsWith(rootFolder, StringComparison.OrdinalIgnoreCase) to decide whether a decoded and canonicalized request path remained inside rootFolder. That raw prefix test did not enforce a directory boundary, so a request such as ..%2fwww2/secret.txt could escape a configured www directory into a sibling www2 directory whose path shared the same string prefix. Applications that register FolderSchemeHandlerFactory for a custom scheme or an HTTP or HTTPS scheme can therefore serve local files outside the intended root when an attacker can cause the embedded browser to request the crafted URL. The issue affects both Unix-style paths such as /tmp/app/www2 and Windows paths such as C:\app\www2, and the fix appends a directory separator to the normalized root before comparison while rejecting null bytes and alternate data stream syntax. This issue is fixed in version 148.0.90.
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Vulnerability Title
CefSharp 路径遍历漏洞
Vulnerability Description
CefSharp是cefsharp组织开源的一个Chromium浏览器框架。 CefSharp 148.0.90之前版本存在安全漏洞,该漏洞源于路径前缀检查未强制目录边界,可能导致攻击者通过特制URL访问预期根目录之外的本地文件。
CVSS Information
N/A
Vulnerability Type
N/A