漏洞信息
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Vulnerability Title
PhpWeasyPrint vulnerable to SSRF and local file disclosure via the attachment option
Vulnerability Description
PhpWeasyPrint is a PHP library allowing PDF generation from a URL or an HTML page. Prior to version 2.6.0, `pontedilana/php-weasyprint` fetches the content of option values server-side via `file_get_contents()` when the value looks like a URL, without restricting the URL scheme. The `attachment` option of `Pdf` is the reachable sink: any value that passes `isOptionUrl()` (`filter_var(..., FILTER_VALIDATE_URL)`) is downloaded by the PHP process and embedded into the generated PDF. Because `FILTER_VALIDATE_URL` accepts `http`, `https`, `ftp`, `file` and PHP stream wrappers such as `php://`, an attacker who can influence the `attachment` value reaches both a **Server-Side Request Forgery** primitive (e.g. internal HTTP endpoints, cloud metadata) and a local file disclosure primitive (`file://`, `php://filter/...`), with the fetched bytes exfiltrated as a PDF attachment. This is the same class of issue KnpLabs/snappy patched for its `xsl-style-sheet` option in GHSA-c5fp-p67m-gq56. The library is documented as a one-to-one substitute for KnpLabs/snappy and shares the same code shape. PhpWeasyPrint version 2.6.0 contains a patch for the issue.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Vulnerability Type
服务端请求伪造(SSRF)
Vulnerability Title
Pontedilana PhpWeasyPrint 服务端请求伪造漏洞
Vulnerability Description
Pontedilana PhpWeasyPrint是Pontedilana公司开源的一个 PHP 库,作为 WeasyPrint 的封装器,支持从 URL 或 HTML 页面生成 PDF 文档,API 设计兼容 KnpLabs/snappy。 Pontedilana PhpWeasyPrint 2.6.0之前版本存在服务端请求伪造漏洞,该漏洞源于未限制URL方案,经由file_get_contents()服务器端获取选项值内容,可能导致攻击者利用attachment选项实现服务端请求伪造和本地文件泄露。
CVSS Information
N/A
Vulnerability Type
N/A