CVE-2012-1785 in Video Embed
Summary
by MITRE
kg_callffmpeg.php in the Video Embed & Thumbnail Generator plugin before 2.0 for WordPress allows remote attackers to execute arbitrary commands via unspecified vectors.
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Analysis
by VulDB Data Team • 01/29/2018
The vulnerability identified as CVE-2012-1785 affects the Video Embed & Thumbnail Generator plugin for WordPress, specifically targeting the kg_callffmpeg.php component in versions prior to 2.0. This represents a critical command injection flaw that enables remote attackers to execute arbitrary code on the affected system. The vulnerability stems from insufficient input validation and sanitization within the plugin's ffmpeg execution functionality, creating a pathway for malicious actors to inject and execute harmful commands through the web interface.
The technical implementation of this vulnerability involves the improper handling of user-supplied input that gets directly passed to system commands without adequate sanitization or validation. Attackers can leverage this weakness by crafting malicious payloads that exploit the ffmpeg call functionality, potentially allowing them to execute commands with the privileges of the web server process. This type of vulnerability falls under CWE-77 which specifically addresses command injection flaws, where untrusted data is incorporated into system commands without proper validation or sanitization. The attack vector typically involves manipulating parameters that control ffmpeg execution, potentially enabling full system compromise when the web server has elevated privileges.
The operational impact of CVE-2012-1785 extends beyond simple code execution to encompass complete system compromise and potential data breach scenarios. Successful exploitation can lead to unauthorized access, data manipulation, privilege escalation, and persistent backdoor installation on affected WordPress installations. This vulnerability particularly affects environments where WordPress plugins are used for video processing and thumbnail generation, making it a significant concern for content management systems that rely on external media processing tools. The attack surface is amplified when the web server has write permissions to the WordPress installation directory, as attackers can potentially upload additional malicious files alongside command execution.
Mitigation strategies for this vulnerability require immediate plugin updates to version 2.0 or later, which contain the necessary patches to address the command injection flaw. System administrators should also implement proper input validation and sanitization measures, restrict web server privileges, and monitor for suspicious activity in the affected plugin directories. The ATT&CK framework categorizes this vulnerability under T1059.001 for command and scripting interpreter, specifically shell scripting, as attackers exploit the system command execution capabilities. Additional defensive measures include implementing web application firewalls, restricting external access to sensitive plugin directories, and conducting regular security audits of WordPress installations. Organizations should also consider implementing principle of least privilege for web server processes and maintaining up-to-date security patches across all installed plugins and themes to prevent similar vulnerabilities from being exploited in the future.