CVE-2025-0769 in PixelYourSite
Summary
by MITRE • 02/28/2025
PixelYourSite - Your smart PIXEL (TAG) and API Manager 10.1.1.1 was found to be vulnerable. Unvalidated user input is used directly in an unserialize function in myapp/modules/facebook/facebook-server-a sync-task.php.
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Analysis
by VulDB Data Team • 03/01/2025
The vulnerability identified as CVE-2025-0769 affects the PixelYourSite plugin version 10.1.1.1, specifically within the facebook-server-a sync-task.php file where unvalidated user input is processed through an unserialize function. This represents a critical security flaw that could enable arbitrary code execution on affected systems. The issue stems from the plugin's failure to properly validate or sanitize user-provided data before passing it to the unserialize function, creating an environment where malicious actors can craft specially formatted input to exploit this weakness.
The technical exploitation of this vulnerability occurs through the manipulation of data that gets passed to the unserialize function, which is a well-known attack vector in web application security. When user input is directly fed into unserialize without proper validation, it creates a path for attackers to inject malicious serialized objects that can execute arbitrary code on the target system. This type of vulnerability is classified as a deserialization vulnerability and aligns with CWE-502 which specifically addresses unsafe deserialization of untrusted data. The attack surface is particularly concerning as it involves a plugin that manages pixel tags and API connections, suggesting potential access to sensitive user data and system resources.
The operational impact of this vulnerability extends beyond simple code execution, as it could allow attackers to gain full control over affected WordPress installations. Given that PixelYourSite is a pixel management plugin, successful exploitation could enable attackers to inject malicious tracking code, steal user data, modify website content, or establish persistent backdoors. The vulnerability affects the synchronization tasks within the Facebook server integration, meaning that attackers could potentially manipulate how data flows between the website and Facebook platforms, creating opportunities for data exfiltration or manipulation of advertising metrics. This attack vector could be particularly dangerous in environments where the plugin is used for e-commerce or marketing automation, as it could compromise sensitive business data and customer information.
Mitigation strategies for CVE-2025-0769 should focus on immediate patching of the affected plugin version, as the vulnerability is a direct result of improper input validation in the unserialize function. System administrators should implement input sanitization measures that validate all user-provided data before it reaches any deserialization functions. The recommended approach aligns with ATT&CK technique T1059.007 which involves the execution of code through deserialization vulnerabilities, emphasizing the need for proper data validation and sanitization. Additionally, implementing web application firewalls with rules to detect and block suspicious unserialize patterns can provide an additional layer of protection. Organizations should also consider restricting file permissions and implementing least privilege access controls to minimize potential damage from successful exploitation attempts. Regular security audits and monitoring for unusual file modifications or unauthorized API access should be conducted to detect potential compromise of affected systems.