CVE-2007-5800 in Backupwordpress Plugin
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in the BackUpWordPress 0.4.2b and earlier plugin for WordPress allow remote attackers to execute arbitrary PHP code via a URL in the bkpwp_plugin_path parameter to (1) plugins/BackUp/Archive.php; and (2) Predicate.php, (3) Writer.php, (4) Reader.php, and other unspecified scripts under plugins/BackUp/Archive/.
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Analysis
by VulDB Data Team • 10/10/2024
The CVE-2007-5800 vulnerability represents a critical remote file inclusion flaw affecting the BackUpWordPress plugin version 0.4.2b and earlier within the WordPress ecosystem. This vulnerability stems from improper input validation and sanitization mechanisms that fail to properly restrict user-supplied data before using it in file inclusion operations. The flaw specifically targets the bkpwp_plugin_path parameter which is processed in multiple script files including Archive.php, Predicate.php, Writer.php, and Reader.php, creating a widespread attack surface across the plugin's core functionality.
The technical implementation of this vulnerability exploits the fundamental weakness in how the plugin handles user input through the bkpwp_plugin_path parameter. When an attacker supplies a malicious URL as the value for this parameter, the application fails to validate or sanitize the input before incorporating it into file inclusion operations. This creates a pathway for remote code execution through the use of PHP's include or require functions, allowing attackers to load and execute arbitrary PHP code from remote servers. The vulnerability is classified under CWE-94 as "Improper Control of Generation of Code ('Code Injection')" and specifically relates to improper handling of dynamic file paths in PHP applications.
The operational impact of this vulnerability is severe and multifaceted, as it provides attackers with complete control over the compromised WordPress installation. Successful exploitation enables remote code execution, allowing threat actors to upload malicious files, establish persistent backdoors, modify website content, steal sensitive data, and potentially use the compromised system as a launchpad for further attacks within the network. The vulnerability affects not just the specific plugin but the entire WordPress installation, as the compromised system can be used for broader reconnaissance and lateral movement activities. This aligns with ATT&CK technique T1190 "Exploit Public-Facing Application" and T1059.007 "Command and Scripting Interpreter: PowerShell" when attackers leverage the compromised system for further operations.
Mitigation strategies for this vulnerability require immediate action including upgrading to a patched version of the BackUpWordPress plugin, implementing proper input validation and sanitization measures, and applying web application firewalls to monitor and block malicious requests. Organizations should also conduct comprehensive security assessments of their WordPress installations, implement network segmentation to limit potential lateral movement, and establish robust monitoring procedures to detect anomalous file inclusion activities. The vulnerability highlights the critical importance of proper input validation, as outlined in OWASP Top Ten Project recommendations for preventing injection flaws, and emphasizes the necessity of maintaining up-to-date software versions to protect against known vulnerabilities. Additionally, implementing principle of least privilege access controls and regular security audits can significantly reduce the risk of exploitation and limit the potential damage from such vulnerabilities.