What the vulnerability does
01Description
The UpdraftPlus: WP Backup & Migration Plugin plugin for WordPress is vulnerable to PHP Object Injection in all versions from 1.23.8 to 1.24.11 via deserialization of untrusted input in the 'recursive_unserialized_replace' function. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present. An administrator must perform a search and replace action to trigger the exploit.
Explanation of Vulnerability in Simple Terms
02Summary
UpdraftPlus versions 1.23.8 through 1.24.11 contain a deserialization vulnerability that allows an attacker to execute arbitrary PHP code on a WordPress site. The vulnerability requires user interaction—typically a site administrator must click a malicious link or visit a crafted page. An attacker can exploit this to gain full control of the site, read sensitive data, modify content, or disable the site entirely.
What an attacker can do
03Attacker Capabilities
Run arbitrary PHP code on the WordPress site and take full control of it.
Potential impact on your site
04Site Impact
An attacker can steal data, modify or delete backups, inject malware, or take the site offline.
Conditions required to exploit
05Prerequisites
A site administrator must click a malicious link or visit an attacker-controlled page while logged in.
Key dates
06Disclosure timeline
January 4, 2025
CVE published
January 6, 2025
Record updated
