WordPress has launched model 6.4.2 that comprises a patch for a important severity vulnerability that would permit attackers to execute PHP code on the location and probably result in a full web site takeover.
The vulnerability was traced again to a characteristic launched in WordPress 6.4 that was meant to enhance HTML parsing within the block editor.
The problem is just not current in earlier variations of WordPress and it solely impacts variations 6.4 and 6.4.1.
An official WordPress announcement describes the vulnerability:
“A Distant Code Execution vulnerability that isn’t immediately exploitable in core, nonetheless the safety group feels that there’s a potential for top severity when mixed with some plugins, particularly in multisite installs.”
Based on an advisory printed by Wordfence:
“Since an attacker in a position to exploit an Object Injection vulnerability would have full management over the on_destroy and bookmark_name properties, they’ll use this to execute arbitrary code on the location to simply acquire full management.
Whereas WordPress Core presently doesn’t have any identified object injection vulnerabilities, they’re rampant in different plugins and themes. The presence of an easy-to-exploit POP chain in WordPress core considerably will increase the hazard degree of any Object Injection vulnerability.”
Object Injection Vulnerability
Wordfence advises that Object Injection vulnerabilities will not be simple to use. Nonetheless they’re recommending that customers of WordPress replace the newest variations.
WordPress itself advises that customers replace their websites instantly.
Learn the official WordPress announcement:
WordPress 6.4.2 Upkeep & Safety Launch
Learn the Wordfence advisory:
PSA: Essential POP Chain Permitting Distant Code Execution Patched in WordPress 6.4.2
Featured Picture by Shutterstock/Nikulina Tatiana
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