CVE-2012-3572 in MyMesyuarat
Summary
by MITRE
Open Source Competency Center (OSCC) MyMeeting 3.0.1 and earlier, and MyMesyuarat 09b-1, does not properly verify uploaded documents, which allows remote authenticated users to execute arbitrary PHP code via a crafted document.
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Analysis
by VulDB Data Team • 02/21/2019
The vulnerability identified as CVE-2012-3572 affects Open Source Competency Center OSCC MyMeeting versions 3.0.1 and earlier, as well as MyMesyuarat version 09b-1, representing a critical security flaw in document upload validation mechanisms. This issue stems from inadequate input sanitization and file verification processes within the web application's document handling functionality, creating a pathway for malicious code execution.
The technical flaw manifests through improper document validation that fails to adequately inspect uploaded files for malicious content or code. Attackers can exploit this weakness by crafting specially formatted documents that contain embedded PHP code, which the application subsequently processes and executes without proper authorization checks. This vulnerability falls under the category of insecure file upload vulnerabilities, specifically aligning with CWE-434 which addresses "Unrestricted Upload of File with Dangerous Type" and CWE-94 which covers "Improper Control of Generation of Code ('Code Injection')."
The operational impact of this vulnerability is severe as it enables remote authenticated users to execute arbitrary PHP code on the target system. This means that an attacker with valid credentials can upload malicious documents that, when processed by the application, will execute code with the privileges of the web server. The attack vector requires only authentication, making it particularly dangerous as it can be exploited by insiders or compromised legitimate users. This vulnerability can lead to complete system compromise, data exfiltration, and potential lateral movement within the network infrastructure.
The attack follows a typical exploitation pattern where the attacker first authenticates to the system using valid credentials, then uploads a malicious document containing PHP code. The application processes this document without proper validation, executing the embedded code and providing the attacker with a persistent backdoor or command execution capability. This vulnerability directly maps to several ATT&CK techniques including T1566.001 for "Phishing: Spearphishing Attachment" and T1059.007 for "Command and Scripting Interpreter: PowerShell" when considering the broader attack chain. Organizations should implement strict file type validation, sanitize all uploaded content, and enforce proper access controls to mitigate this risk. Additionally, regular security assessments and input validation testing are essential to prevent similar vulnerabilities in web applications. The vulnerability demonstrates the critical importance of secure coding practices and proper validation of user-supplied content in preventing code injection attacks that can lead to complete system compromise.