CVE-2014-6540 in VM VirtualBox
Summary
by MITRE
Unspecified vulnerability in the Oracle VM VirtualBox component in Oracle Virtualization VirtualBox before 4.1.34, before 4.2.26, and before 4.3.14 allows local users to affect availability via vectors related to Graphics driver (WDDM) for Windows guests.
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Analysis
by VulDB Data Team • 12/14/2024
The vulnerability identified as CVE-2014-6540 resides within Oracle VM VirtualBox's graphics driver implementation for Windows guest operating systems, specifically affecting versions prior to 4.1.34, 4.2.26, and 4.3.14. This issue represents a significant security weakness in virtualization infrastructure that could potentially compromise system availability through malicious exploitation of the Windows Display Driver Model (WDDM) graphics driver component. The unspecified nature of the vulnerability indicates that the exact technical flaw within the graphics driver implementation remains undocumented in the public CVE description, though the impact is clearly defined as affecting availability rather than confidentiality or integrity.
The technical flaw manifests within the graphics driver subsystem of VirtualBox when running Windows guest operating systems, where the WDDM implementation contains a vulnerability that can be exploited by local attackers to disrupt system operations. This type of vulnerability typically involves memory corruption issues, buffer overflows, or improper input validation within the graphics driver code that processes display-related commands from guest operating systems. The WDDM graphics driver serves as a critical interface between the virtualized graphics hardware and the guest operating system, making it a prime target for exploitation that could lead to denial of service conditions or system crashes.
From an operational impact perspective, this vulnerability poses a serious threat to virtualization environments where VirtualBox is deployed, particularly in enterprise settings where virtual machines host critical applications or services. Local users within a guest operating system can potentially exploit this weakness to cause system instability, leading to complete system crashes or forced reboots of the virtual machine. The availability impact means that legitimate users may experience service disruption, system downtime, and potential data loss if the exploitation results in system crashes or forced shutdowns. The vulnerability is particularly concerning because it requires only local access within the guest operating system, making it accessible to any user with login credentials to the virtual machine.
Security professionals should note that this vulnerability aligns with CWE-119, which addresses "Improper Access to Memory" and commonly affects driver implementations in virtualization environments. The attack vector likely involves exploitation of memory corruption issues within the graphics driver code that handles WDDM protocol communications between the guest and host systems. Organizations using VirtualBox should prioritize immediate patching to versions 4.1.34, 4.2.26, or 4.3.14 depending on their current deployment, as these releases contain the necessary fixes for the graphics driver vulnerability. Additionally, implementing network segmentation and access controls to limit local user privileges within virtual machines can help reduce the attack surface, though the most effective mitigation remains applying the vendor-provided security updates. The vulnerability demonstrates the critical importance of keeping virtualization software updated and highlights the need for comprehensive security testing of driver components within virtual environments, as these components often serve as attack vectors for privilege escalation and availability disruption attacks.