CVE-2012-4883 in 3DVIA Composer
Summary
by MITRE
Multiple untrusted search path vulnerabilities in 3DVIA Composer V6R2012 HF1 Build 6.8.1.1652 allow local users to gain privileges via a Trojan horse (1) dwmapi.dll or (2) ibfs32.dll file in the current working directory, as demonstrated by a directory that contains a .smg file. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 02/08/2018
The vulnerability identified as CVE-2012-4883 represents a critical untrusted search path issue affecting 3DVIA Composer V6R2012 HF1 Build 6.8.1.1652, a 3D visualization and data management software. This flaw falls under the category of improper library loading mechanisms, where the application fails to properly validate the source of dynamically loaded libraries, creating a pathway for privilege escalation through malicious file placement. The vulnerability specifically manifests when the software attempts to load system libraries dwmapi.dll and ibfs32.dll, which are critical components in Windows operating systems. When these libraries are present in the current working directory of the application, the system may inadvertently load malicious versions instead of legitimate system files, potentially executing unauthorized code with elevated privileges.
The technical exploitation of this vulnerability leverages the principle of least privilege violation through dynamic link library (DLL) hijacking techniques. The flaw occurs because 3DVIA Composer does not properly implement secure library loading practices, allowing attackers to place malicious DLL files in the application's working directory. This creates a scenario where the application's execution path is manipulated to load attacker-controlled code rather than legitimate system libraries. The attack vector is particularly insidious as it requires no special privileges to set up, relying instead on the application's trust in its working directory. The vulnerability is specifically demonstrated through .smg file manipulation, which serves as a trigger to initiate the problematic library loading sequence, making the attack surface broader than initially apparent.
The operational impact of CVE-2012-4883 extends beyond simple privilege escalation to potentially enable full system compromise. Local users who can manipulate the application's working directory gain the ability to execute arbitrary code with the privileges of the target user, which could range from standard user access to elevated administrative rights depending on the execution context. This vulnerability directly maps to CWE-427 Uncontrolled Search Path Element, which describes how applications that use search paths without proper validation can be tricked into loading malicious code. The implications are particularly severe in enterprise environments where 3DVIA Composer might be used for design and engineering workflows, as these systems often contain sensitive intellectual property and may operate with elevated privileges. Attackers could exploit this vulnerability to install backdoors, exfiltrate data, or establish persistent access to the compromised systems.
Mitigation strategies for CVE-2012-4883 should focus on implementing secure coding practices and system hardening measures. Organizations should immediately apply vendor patches if available, as this vulnerability was likely addressed through proper library loading mechanisms and search path validation. System administrators should implement the principle of least privilege by running the application with minimal required permissions and by ensuring that the application's working directory is properly secured against unauthorized file placement. Network segmentation and access controls should be enforced to limit the potential impact of exploitation. The vulnerability also highlights the importance of secure development practices as outlined in the MITRE ATT&CK framework under the T1059 technique for execution through legitimate user processes. Regular security audits should verify that applications properly implement secure library loading, and system monitoring should be enhanced to detect suspicious file placement activities in application directories. Additionally, implementing application whitelisting solutions can prevent unauthorized DLL files from executing, providing an additional layer of defense against this class of vulnerability.