CVE-2015-2509 in Windows
Summary
by MITRE
Windows Media Center in Microsoft Windows Vista SP2, Windows 7 SP1, Windows 8, and Windows 8.1 allows user-assisted remote attackers to execute arbitrary code via a crafted Media Center link (mcl) file, aka "Windows Media Center RCE Vulnerability."
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 11/28/2024
The vulnerability identified as CVE-2015-2509 represents a critical remote code execution flaw within Windows Media Center component of Microsoft Windows operating systems. This vulnerability affects Windows Vista SP2, Windows 7 SP1, Windows 8, and Windows 8.1 systems, making it a widespread concern across multiple Windows versions. The flaw specifically resides in how Windows Media Center handles crafted Media Center link files with the .mcl extension, creating a potential attack vector that can be exploited by remote adversaries with user assistance.
The technical implementation of this vulnerability stems from improper input validation within the Media Center application's processing of mcl files. When a user opens a specially crafted mcl file, the application fails to properly sanitize the file contents, allowing malicious code to be executed within the context of the Media Center process. This represents a classic buffer overflow or injection vulnerability pattern where untrusted input is directly processed without adequate validation mechanisms. The vulnerability operates under CWE-121, which classifies buffer overflow conditions that can lead to arbitrary code execution, and aligns with ATT&CK technique T1203 for legitimate program execution through masquerading.
The operational impact of this vulnerability is significant as it enables attackers to achieve remote code execution with the privileges of the user running Media Center. This can lead to complete system compromise, data exfiltration, and persistent access to affected systems. The user-assisted nature of the attack means that social engineering plays a crucial role in exploitation, as users must be convinced to open the malicious mcl file. This makes the vulnerability particularly dangerous in enterprise environments where users may encounter such files through email attachments, web downloads, or malicious websites.
Mitigation strategies for CVE-2015-2509 should focus on both immediate patching and operational security measures. Microsoft released security updates through Windows Update that address this vulnerability by correcting the input validation procedures within Media Center. Organizations should prioritize immediate deployment of these patches across all affected systems. Additionally, security administrators should implement application whitelisting policies to restrict execution of mcl files and consider disabling Windows Media Center functionality if it is not required for business operations. Network-based mitigations such as firewall rules that block access to potentially malicious file types and email filtering solutions that scan for suspicious mcl file attachments should also be implemented. The vulnerability demonstrates the importance of proper input validation and sandboxing techniques as outlined in the OWASP Top Ten and Microsoft's Secure Coding Guidelines, emphasizing that applications should never trust external input and must validate all data before processing.