CVE-2014-4118 in Windows
Summary
by MITRE
XML Core Services (aka MSXML) 3.0 in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows remote attackers to execute arbitrary code or cause a denial of service (system-state corruption) via crafted XML content, aka "MSXML Remote Code Execution Vulnerability."
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Analysis
by VulDB Data Team • 12/16/2024
The CVE-2014-4118 vulnerability represents a critical remote code execution flaw in Microsoft XML Core Services version 3.0, commonly known as MSXML, which affects multiple Windows operating systems including server and client versions. This vulnerability resides in the XML parsing functionality that processes structured data within Microsoft environments, making it a prime target for attackers seeking to compromise systems through malformed XML content. The flaw specifically impacts Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1, demonstrating the widespread reach of this vulnerability across Microsoft's ecosystem.
The technical nature of this vulnerability stems from improper input validation within the MSXML parser when handling crafted XML content. Attackers can exploit this weakness by constructing specially formatted XML documents that trigger memory corruption during parsing operations, leading to arbitrary code execution with the privileges of the affected process. This flaw operates at the system-state corruption level, meaning that successful exploitation can result in complete system compromise, allowing attackers to execute malicious code, install backdoors, or cause denial of service conditions that may persist until system reboot. The vulnerability's classification as a remote code execution issue means that attackers need not have physical access to the target system, as the exploit can be delivered through web-based attacks or email attachments containing malicious XML content.
The operational impact of CVE-2014-4118 extends beyond simple system compromise, as it represents a foundational security weakness that can be leveraged for advanced persistent threats. Organizations running affected systems face significant risk of data breaches, system infiltration, and potential lateral movement within their networks since the vulnerability allows for privilege escalation and persistent access. The attack surface is particularly broad given that MSXML is integrated into numerous Microsoft applications and services, making it possible for attackers to exploit this vulnerability through various vectors including web browsers, email clients, and enterprise applications that utilize XML processing. According to CWE standards, this vulnerability maps to CWE-121, which describes heap-based buffer overflow conditions, and aligns with ATT&CK techniques involving execution through remote code injection and privilege escalation.
Mitigation strategies for CVE-2014-4118 primarily involve applying Microsoft security patches and updates, as the vendor released comprehensive fixes for all affected versions. Organizations should prioritize immediate patch deployment across their infrastructure, particularly for systems that process untrusted XML content or have exposed web services. Additional protective measures include implementing network segmentation to limit attack vectors, configuring application whitelisting policies to restrict XML processing capabilities, and monitoring network traffic for suspicious XML content patterns. Security teams should also consider disabling unnecessary XML processing features in applications and implementing web application firewalls to filter potentially malicious XML content. The vulnerability's severity classification as critical by Microsoft underscores the importance of immediate remediation, as exploitation can occur without user interaction and may be automated through exploit kits, making proactive defense essential for maintaining system integrity and preventing unauthorized access to sensitive organizational data.