SB2023021612 - Remote PHP code injection in Dompdf

Description

This security bulletin contains information about 1 security vulnerability.

1) Code Injection (CVE-ID: CVE-2022-28368)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation when handling "src:url" field of an @font-face Cascading Style Sheets (CSS) statement inside an HTML input file. A remote attacker can link a malicious .php file and execute it on the system with installed Dompd when converting HTML to PDF.

Successful exploitation of the vulnerability can allow an attacker to compromise the affected system.

Remediation

Install update from vendor's website.

References

• https://packagist.org/packages/dompdf/dompdf#v1.2.1
• https://snyk.io/blog/security-alert-php-pdf-library-dompdf-rce/
• https://github.com/dompdf/dompdf/commit/4c70e1025bcd9b7694b95dd552499bd83cd6141d
• https://github.com/dompdf/dompdf/pull/2808
• https://github.com/dompdf/dompdf/issues/2598