URI validation failure on SVG parsing in Dompdf
CVE-2023-23924

10CRITICAL

Key Information:

Vendor

DomPDF

Status
DomPDF
Vendor
CVE Published:
1 February 2023

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 54%

What is CVE-2023-23924?

Dompdf, an HTML to PDF conversion tool, has a vulnerability that allows URI validation to be bypassed in SVG parsing by using <image> tags with uppercase letters. This issue affects version 2.0.1 and impacts PHP versions prior to 8.0.0, enabling attackers to exploit the vulnerability by providing a specially crafted SVG file. Successful exploitation could lead to arbitrary object unserialize, resulting in arbitrary file deletion or remote code execution, depending on the classes available in the environment.

Affected Version(s)

dompdf < 2.0.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-23924
Created by motikan2010

References

https://github.com/dompdf/dompdf/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/dompdf/dompdf/commit/7558f07f693b2ac32...
x_refsource_MISC
https://github.com/dompdf/dompdf/releases/tag/v2.0.2
x_refsource_MISC

EPSS Score

54% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2023-23924 : URI validation failure on SVG parsing in Dompdf