WordPress Core maybe_unserialize Deserialization of Untrusted Data Remote Code Execution Vulnerability

November 19th, 2024
ZDI-24-1530 ZDI-CAN-22613

CVE ID

CVE-2024-31210

CVSS Score

8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

WordPress

Affected Products

Core

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of WordPress Core. Authentication may be required to exploit this vulnerability, depending on the product configuration.

The specific flaw exists within the maybe_unserialize function. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account.

Additional Details

WordPress has issued an update to correct this vulnerability. More details can be found at:
https://wordpress.org/documentation/wordpress-version/version-6-4-3/

Disclosure Timeline

  • 2024-01-10 - Vulnerability reported to vendor
  • 2024-11-19 - Coordinated public release of advisory
  • 2024-11-19 - Advisory Updated

Credit

@_s_n_t of @pentestltd

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