Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS01NzdwLTdqN2gtMmpnZs4ABBYY

Deserialization of Untrusted Data in dompdf/dompdf

DomPDF before version 2.0.0 is vulnerable to PHAR (PHP Archive) deserialization due to a lack of checking on the protocol before passing it into the file_get_contents() function. An attacker who can upload files of any type to the server can pass in the phar:// protocol to unserialize the uploaded file and instantiate arbitrary PHP objects. This can lead to remote code execution, especially when DOMPdf is used with frameworks with documented POP chains like Laravel or vulnerable developer code.

Permalink: https://github.com/advisories/GHSA-577p-7j7h-2jgf
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS01NzdwLTdqN2gtMmpnZs4ABBYY
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: 6 days ago
Updated: 2 days ago

CVSS Score: 9.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-577p-7j7h-2jgf, CVE-2021-3838
References:

• https://nvd.nist.gov/vuln/detail/CVE-2021-3838
• https://github.com/dompdf/dompdf/commit/99aeec1efec9213e87098d42eb09439e7ee0bb6a
• https://huntr.com/bounties/0bdddc12-ff67-4815-ab9f-6011a974f48e
• https://github.com/advisories/GHSA-577p-7j7h-2jgf

Repository: https://github.com/dompdf/dompdf
Blast Radius: 42.6

Affected Packages