CVE-2021-3838

Description

DomPDF before version 2.0.0 is vulnerable to PHAR 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.

Reserved 2021-09-29 | Published 2024-11-15 | Updated 2024-11-18 | Assigner @huntr_ai

Product status

Any version before 2.0.0
affected

References

huntr.com/bounties/0bdddc12-ff67-4815-ab9f-6011a974f48e

github.com/dompdf/dompdf/commit/99aeec1efec9213e87098d42eb09439e7ee0bb6a

cve.org (CVE-2021-3838)

nvd.nist.gov (CVE-2021-3838)

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