CVE-2018-12199

Vulnerability

A buffer overflow vulnerability exists in an OS component of Intel Converged Security Management Engine (CSME) before versions 11.8.60, 11.11.60, 11.22.60, or 12.0.20, and Intel Trusted Execution Engine (TXE) before versions 3.1.60 or 4.0.10 [1]. The flaw is present in the affected firmware components and does not require special configuration beyond access to the system hardware [1].

Exploitation

To exploit this vulnerability, an attacker must have physical access to the target system and possess privileged user credentials [1]. The attacker then sends crafted input to the OS component, triggering the buffer overflow condition. No additional user interaction is needed beyond the initial privileged physical access [1].

Impact

Successful exploitation allows a privileged attacker to potentially execute arbitrary code at the firmware level [1]. This can lead to full compromise of the system's security stack, including the ability to bypass operating system protections and gain persistent control over the device [1].

Mitigation

Intel released patched firmware versions to address this vulnerability: CSME 11.8.60, 11.11.60, 11.22.60, or 12.0.20, and TXE 3.1.60 or 4.0.10 [1]. System administrators and end users should obtain the updated firmware from their device manufacturer and apply it as soon as possible. No workarounds are provided in the available reference [1].