漏洞信息
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Vulnerability Title
Server-Side Request Forgery and Local File Disclosure in CTI-Transmute Evaluation PDF Rendering
Vulnerability Description
CTI-Transmute is affected by a server-side request forgery vulnerability in the evaluation report PDF-generation functionality.
User-controlled CTI content, including conversion names, descriptions, and comments, is converted from Markdown to HTML and rendered as a PDF using WeasyPrint. Before the patch, the renderer used WeasyPrint’s default URL-fetching behavior without restricting the protocols or destinations that could be referenced by the generated HTML.
An attacker able to supply content included in an evaluation report could inject crafted resource references using schemes such as http://, https://, or file://. When the report was rendered, CTI-Transmute could fetch these resources using the application server’s network connectivity and filesystem privileges.
Successful exploitation could allow an attacker to:
* access services available only from the CTI-Transmute server or its internal network;
* probe internal hosts and service endpoints;
* retrieve local files readable by the application process; and
* expose fetched content through the generated PDF, depending on the referenced resource type and rendering context.
The vulnerability is corrected by providing WeasyPrint with a restrictive URL fetcher that permits only self-contained data: URIs. The externally hosted Google Fonts stylesheet was also removed so that PDF generation performs no intentional network or filesystem fetches.
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N
Vulnerability Type
服务端请求伪造(SSRF)
Vulnerability Title
MISP cti-transmute 服务端请求伪造漏洞
Vulnerability Description
MISP cti-transmute是MISP组织的一款威胁情报数据格式转换工具。 MISP cti-transmute 1.4.0及之前版本存在服务端请求伪造漏洞,该漏洞源于评估报告PDF生成功能存在服务端请求伪造,使用WeasyPrint渲染用户控制的Markdown内容时未限制URL获取协议和目标,可能导致攻击者访问内部服务、探测内部主机及端点、读取本地文件。
CVSS Information
N/A
Vulnerability Type
N/A