Broken Link Checker <= 1.11.16 - Authenticated (Admin+) PHAR Deserialization

7.2
Deserialization of Untrusted Data
CVE CVE-2022-2438
CVSS 7.2 (High)
Publicly Published July 18, 2022
Last Updated October 20, 2023
Researcher Rasoul Jahanshahi

Description

The Broken Link Checker plugin for WordPress is vulnerable to deserialization of untrusted input via the '$log_file' value in versions up to, and including 1.11.16. This makes it possible for authenticated attackers with administrative privileges and above to call files using a PHAR wrapper that will deserialize the data and call arbitrary PHP Objects that can be used to perform a variety of malicious actions granted a POP chain is also present. It also requires that the attacker is successful in uploading a file with the serialized payload.

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Vulnerability Details for Broken Link Checker

Software Type Plugin
Software Slug broken-link-checker (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.11.17, or a newer patched version
Affected Version
  • <= 1.11.16
Patched Version
  • 1.11.17

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