CVE-2018-12149 in Extreme Tuning Utility
Summary
by MITRE
Buffer overflow in input handling in Intel Extreme Tuning Utility before 6.4.1.21 may allow an authenticated user to potentially deny service to the application via local access.
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Analysis
by VulDB Data Team • 03/23/2020
The vulnerability identified as CVE-2018-12149 represents a critical buffer overflow flaw within Intel's Extreme Tuning Utility software, specifically affecting versions prior to 6.4.1.21. This issue resides in the input handling mechanisms of the utility, which is designed to provide advanced overclocking and system tuning capabilities for Intel processors. The vulnerability manifests when the application processes user-supplied input data without adequate bounds checking, creating an exploitable condition that could be leveraged by malicious actors.
The technical implementation of this buffer overflow occurs during the processing of input parameters within the Intel Extreme Tuning Utility framework. When an authenticated user provides malformed or excessively long input data to the application's input handling functions, the software fails to properly validate the input size against predetermined buffer limits. This lack of proper input sanitization allows attackers to overwrite adjacent memory locations, potentially leading to arbitrary code execution or system instability. The vulnerability is classified as a classic buffer overflow condition that falls under CWE-121, which specifically addresses stack-based buffer overflow conditions in software applications.
From an operational perspective, this vulnerability presents a significant risk to systems running affected versions of Intel Extreme Tuning Utility, particularly in enterprise environments where system stability and availability are paramount. The attack vector requires local access and authentication, meaning that an attacker must already have legitimate user credentials to exploit the vulnerability. However, the potential impact extends beyond simple denial of service, as the buffer overflow could potentially allow for privilege escalation or arbitrary code execution within the context of the running application. This makes the vulnerability particularly concerning for systems where the utility is used with elevated privileges or in automated environments.
The exploitation of CVE-2018-12149 aligns with several tactics described in the MITRE ATT&CK framework, particularly those related to privilege escalation and denial of service operations. The vulnerability could be leveraged as part of a broader attack chain where an attacker first gains access to a system, then uses this buffer overflow to escalate privileges or disrupt system operations. Organizations using Intel Extreme Tuning Utility should consider this vulnerability as part of their broader security posture assessment, particularly given that the utility is often used in high-performance computing environments where system reliability is critical. The recommended mitigation strategy involves immediate deployment of Intel's security update 6.4.1.21, which addresses the buffer overflow by implementing proper input validation and bounds checking mechanisms.
The broader implications of this vulnerability extend to the security practices surrounding system tuning utilities and their potential attack surface. Many system management tools, particularly those designed for advanced performance optimization, often operate with elevated privileges and have complex input handling mechanisms that can introduce security risks if not properly validated. This vulnerability demonstrates the importance of implementing robust input validation controls, especially in software that provides system-level access or modification capabilities. Organizations should also consider implementing additional monitoring and logging controls to detect potential exploitation attempts, as buffer overflow conditions can often be detected through anomalous system behavior or memory access patterns that may indicate an active attack.
The vulnerability serves as a reminder of the critical importance of keeping system management and tuning utilities up to date with the latest security patches. Many organizations may overlook the security implications of tools like Intel Extreme Tuning Utility, assuming that their use in controlled environments makes them less vulnerable to attack. However, this vulnerability demonstrates that even tools designed for system optimization can introduce significant security risks if not properly maintained and updated. The remediation process should include not only patching the specific vulnerability but also conducting comprehensive security assessments of all system tuning and management utilities within the organization's infrastructure.