Code Execution in e107 via e_array Deserialization

Executive Summary

This vulnerability in e107 before version 2.3.8 allows an attacker with database write access to execute arbitrary PHP code. The issue occurs in the e_array deserialization handler, where a crafted payload stored in the user_prefs column bypasses proper checks and gets executed via eval() when user preferences are loaded.

Useful 0 Not Useful 0

Detection Guidance

Detecting this vulnerability requires checking for vulnerable e107 versions and inspecting database entries for malicious payloads in the user_prefs column. Review e107 version logs and search for PHP code execution attempts in web server logs. No specific commands are provided in the context.

Useful 0 Not Useful 0

Impact Analysis

An attacker could gain full control over the affected e107 system, allowing them to execute malicious code, steal sensitive data, or disrupt services. This requires the attacker to have out-of-band database write access, which may be obtained through other vulnerabilities or insider access.

Useful 0 Not Useful 0

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's integrity and confidentiality requirements or HIPAA's safeguards for protected health information. Organizations using vulnerable e107 versions may face compliance violations and legal penalties.

Useful 0 Not Useful 0

Mitigation Strategies

Immediately upgrade e107 to version 2.3.8 or later to address the deserialization flaw. Review database entries in the user_prefs column for suspicious payloads containing PHP code or eval() calls. Restrict database write access to trusted users only.

Useful 0 Not Useful 0