CVEvulnerability

CVE-2023-23924

9.8 CRITICAL Published 2023-02-01 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-02-01
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-551, CWE-863

Description

Dompdf is an HTML to PDF converter. The URI validation on dompdf 2.0.1 can be bypassed on SVG parsing by passing `<image>` tags with uppercase letters. This may lead to arbitrary object unserialize on PHP < 8, through the `phar` URL wrapper. An attacker can exploit the vulnerability to call arbitrary URL with arbitrary protocols, if they can provide a SVG file to dompdf. In PHP versions before 8.0.0, it leads to arbitrary unserialize, that will lead to the very least to an arbitrary file deletion and even remote code execution, depending on classes that are available.

Affected configurations

• dompdf project dompdf 2.0.1

Related

Weakness · CWE (2)

  • CWE-551 Incorrect Behavior Order: Authorization Before Parsing and Canonicalization weakness
  • CWE-863 Incorrect Authorization weakness

References