CVE-2023-31348 in μProf Tool
Summary
by MITRE • 08/13/2024
A DLL hijacking vulnerability in AMD μProf could allow an attacker to achieve privilege escalation, potentially resulting in arbitrary code execution.
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Analysis
by VulDB Data Team • 12/03/2024
The CVE-2023-31348 vulnerability represents a critical DLL hijacking flaw within AMD μProf software that poses significant security risks to enterprise environments. This vulnerability stems from improper handling of dynamic link library loading mechanisms within the AMD profiling tool, creating an exploitable condition that adversaries can leverage for privilege escalation. The flaw exists in the software's execution path where it fails to properly validate or restrict the loading of dynamic libraries from untrusted directories, allowing malicious actors to place specially crafted DLL files in strategic locations that the application will subsequently load. This particular vulnerability affects systems running AMD μProf software and represents a classic example of insecure library loading practices that have been documented in numerous security assessments and penetration testing reports. The vulnerability is particularly concerning because it operates at the privilege level of the running process, potentially enabling attackers to execute arbitrary code with elevated permissions.
The technical implementation of this vulnerability involves the application's failure to implement proper DLL search order security measures, specifically the absence of secure library loading practices such as SetDllDirectory or LoadLibraryEx with appropriate flags. When AMD μProf executes, it searches for required DLL dependencies in a predictable order that includes the current working directory, system directories, and potentially user-writable locations. Attackers can exploit this by placing malicious DLL files in directories that are searched before the legitimate system libraries, causing the application to load the attacker-controlled code instead of the intended legitimate DLLs. This flaw aligns with CWE-426, which describes the insecure loading of dynamic libraries, and demonstrates how applications that do not properly restrict library loading paths create opportunities for privilege escalation attacks. The vulnerability can be exploited through various attack vectors including social engineering, drive-by downloads, or compromise of systems where users have write access to directories that are part of the DLL search path.
The operational impact of CVE-2023-31348 extends beyond simple code execution to encompass full system compromise when exploited effectively. An attacker who successfully exploits this vulnerability can gain elevated privileges and execute arbitrary code within the security context of the AMD μProf process, which may run with administrative privileges depending on the system configuration and deployment model. This privilege escalation capability enables attackers to perform actions such as installing additional malware, modifying system files, accessing sensitive data, or establishing persistent access through backdoor creation. The vulnerability's exploitation aligns with several ATT&CK techniques including privilege escalation through DLL hijacking and persistence mechanisms. Organizations running AMD μProf software are particularly at risk since the tool is often deployed in enterprise environments where it may run with elevated privileges during profiling operations, making the potential impact of exploitation significantly more severe than in typical user environments.
Mitigation strategies for this vulnerability should focus on both immediate remediation and long-term architectural improvements to prevent similar issues. Organizations should immediately apply the vendor-provided patches and updates to address the DLL loading vulnerability within AMD μProf. Additionally, system administrators should implement proper security configurations including the use of secure library loading practices such as setting explicit DLL search paths, implementing application whitelisting, and ensuring that user accounts have minimal necessary privileges. The implementation of Windows Defender Application Control or similar application control mechanisms can help prevent unauthorized DLL loading by restricting which binaries can be executed. Network segmentation and monitoring for suspicious DLL loading activities can also provide additional defense-in-depth measures. Security teams should conduct comprehensive vulnerability assessments to identify other applications within their environment that may exhibit similar insecure library loading behaviors, as this represents a common class of vulnerability that affects numerous software applications across different vendors and platforms. Regular security awareness training for system administrators and developers should emphasize secure coding practices to prevent future occurrences of similar vulnerabilities.