PT-2018-14766 · Mpdf · Mpdf

Maplebluexo · Published 2018-11-07 · Updated 2024-08-05 · CVE-2018-19047

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions mPDF versions prior to 7.1.7

Description The issue allows for Server-Side Request Forgery (SSRF) if mPDF is deployed as a web application that accepts arbitrary HTML. This can be demonstrated by an <img src="http://192.168> substring that triggers a call to getImage in Image/ImageProcessor.php. It is worth noting that the software maintainer disputes this issue, stating that allowing users to pass HTML without sanitizing it is inherently problematic.

Recommendations For mPDF versions prior to 7.1.7, as a temporary workaround, consider sanitizing all user-provided HTML to prevent SSRF attacks. Restrict access to the getImage function in Image/ImageProcessor.php to minimize the risk of exploitation. Avoid using the src attribute in the <img> tag in the affected API endpoint until the issue is resolved.

Exploit

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2018-19047

Affected Products

Mpdf

References · 3

• 🔥 https://github.com/mpdf/mpdf/issues/867 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-19047 · Security Note
• https://osv.dev/vulnerability/CVE-2018-19047 · Vendor Advisory