CVE-2010-4296 in Workstation
Summary
by MITRE
vmware-mount in VMware Workstation 7.x before 7.1.2 build 301548 on Linux, VMware Player 3.1.x before 3.1.2 build 301548 on Linux, VMware Server 2.0.2 on Linux, and VMware Fusion 3.1.x before 3.1.2 build 332101 does not properly load libraries, which allows host OS users to gain privileges via vectors involving shared object files.
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Analysis
by VulDB Data Team • 12/29/2024
This vulnerability affects VMware virtualization products including workstation player and server components across multiple versions where the vmware-mount utility fails to properly handle library loading mechanisms. The flaw exists in the privilege escalation pathway through improper shared object file handling during mount operations. Attackers can exploit this by manipulating the library loading process to execute arbitrary code with elevated privileges on the host operating system. The vulnerability specifically targets the dynamic linking behavior of the vmware-mount utility which is responsible for mounting virtual machine disk images and handling file system operations within the virtualized environment.
The technical implementation of this vulnerability stems from insecure library loading practices where the vmware-mount utility does not properly validate or restrict the loading of shared object files from untrusted sources. This creates a classic privilege escalation scenario where local users can manipulate the library search path or inject malicious shared libraries that get executed with elevated privileges. The flaw operates under the weakness category of CWE-426 Untrusted Search Path, which specifically addresses the issue of applications executing code from unexpected locations due to improper path handling. The vulnerability allows attackers to leverage the elevated privileges of the vmware-mount process to gain root access or execute commands with administrative privileges on the host system.
The operational impact of this vulnerability extends beyond simple privilege escalation as it provides attackers with persistent access to the underlying host operating system. Once exploited, adversaries can establish backdoors, modify system files, install malware, or conduct further reconnaissance within the host environment. This vulnerability particularly affects organizations using VMware products in multi-user environments where local users might attempt to exploit the privilege escalation vector. The impact is significant because the vulnerability can be exploited without requiring network access or special authentication, making it a critical threat for virtualized environments. The attack surface is particularly concerning in enterprise settings where VMware products are widely deployed for development, testing, and production workloads.
Mitigation strategies for this vulnerability include immediate patching of affected VMware products to version 7.1.2 build 301548 or later for workstation, 3.1.2 build 301548 or later for player, 2.0.2 for server, and 3.1.2 build 332101 or later for fusion. System administrators should also implement proper access controls and restrict local user privileges on systems running VMware products. Additional defensive measures include monitoring for suspicious library loading activities and implementing privilege separation for virtualization utilities. The vulnerability aligns with ATT&CK technique T1068 Privilege Escalation through the use of insecure library loading mechanisms and could be detected through behavioral monitoring of the vmware-mount utility. Organizations should also consider implementing security awareness training for users who might inadvertently expose systems to this type of attack vector.