Description
WordPress Plugin Broken Link Checker is prone to a deserialization vulnerability. Attackers can possibly exploit this issue to call files using a PHAR wrapper that will deserialize and call arbitrary PHP Objects that can be used to perform a variety of malicious actions, granted a POP chain is also present. WordPress Plugin Broken Link Checker version 1.11.16 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 1.11.17 or latest
References
https://wpscan.com/vulnerability/ecfc0221-92c0-49a6-88a3-f1379303bb56
https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2438
https://plugins.svn.wordpress.org/broken-link-checker/trunk/readme.txt
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Joomla Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2011-2889)
SugarCRM Improper Control of Generation of Code ('Code Injection') Vulnerability (CVE-2019-17302)
Tornado Observable Differences in Behavior to Error Inputs Vulnerability (CVE-2014-9720)