PT-2021-15761 · Facebook · Facebook For Wordpress

Chloe Chamberland · Published 2021-04-12 · Updated 2021-04-20 · CVE-2021-24217

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Facebook for WordPress plugin versions prior to 3.0.0

Description: The issue concerns the run action function, which deserializes user-supplied data, allowing for PHP objects to be supplied and creating an object injection vulnerability. Additionally, a usable magic method in the plugin could be exploited to achieve remote code execution.

Recommendations: For versions prior to 3.0.0, update to version 3.0.0 or later to resolve the issue. As a temporary workaround, consider disabling the run action function until a patch is available. Restrict access to the plugin's magic methods to minimize the risk of exploitation.

Exploit

Fix

RCE

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2021-24217

Affected Products

Facebook For Wordpress

References · 4

• 🔥 https://wpscan.com/vulnerability/509f2754-a1a1-4142-9126-ae023a88533a · Exploit
• 🔥 https://wordfence.com/blog/2021/03/two-vulnerabilities-patched-in-facebook-for-wordpress-plugin · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-24217 · Security Note
• https://osv.dev/vulnerability/CVE-2021-24217 · Vendor Advisory