CVE-2023-48361 in CSME
Summary
by MITRE • 08/14/2024
Improper initialization in firmware for some Intel(R) CSME may allow a privileged user to potentially enable information disclosure via local access.
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Analysis
by VulDB Data Team • 02/05/2026
The vulnerability identified as CVE-2023-48361 represents a critical flaw in the firmware implementation of certain Intel Client Side Management Engine (CSME) components. This issue stems from improper initialization procedures within the firmware layer that governs the secure execution environment of Intel processors. The CSME firmware operates as a separate microcontroller within Intel platforms, managing various security functions including platform initialization, firmware updates, and hardware security features. When firmware initialization fails to properly establish security boundaries or validate system states, it creates potential attack vectors that could be exploited by malicious actors with elevated privileges.
The technical nature of this vulnerability falls under the category of improper initialization within firmware security mechanisms, which aligns with CWE-665, "Improper Initialization" in the Common Weakness Enumeration framework. This flaw specifically affects the secure boot process and runtime environment management of Intel platforms, where inadequate initialization of security-critical components could result in information disclosure vulnerabilities. The vulnerability requires local access and privileged user privileges to exploit, meaning that an attacker must already have elevated system access or administrative rights to leverage this weakness. This privileged requirement significantly reduces the attack surface but does not eliminate the risk entirely, particularly in environments where privilege escalation attacks are possible.
The operational impact of CVE-2023-48361 extends beyond simple information disclosure, potentially compromising the integrity of the platform's secure execution environment. When firmware initialization fails to properly establish security boundaries, it may allow unauthorized access to sensitive system information, including cryptographic keys, platform configuration data, or other confidential parameters that should remain protected within the secure domain. This information disclosure could facilitate further attacks, including but not limited to privilege escalation, system compromise, or targeted attacks against specific platform features. The vulnerability particularly affects systems where the CSME firmware controls critical security functions such as Trusted Platform Module (TPM) operations, secure boot processes, and platform attestation mechanisms.
Mitigation strategies for this vulnerability should prioritize firmware updates from Intel as the primary remediation approach, ensuring that affected systems receive the latest security patches addressing the improper initialization issue. System administrators should also implement comprehensive monitoring of privileged user activities and access patterns to detect potential exploitation attempts. The ATT&CK framework categorizes this vulnerability under T1547.001 "Registry Run Keys / Startup Folder" and T1068 "Exploitation for Privilege Escalation" as attackers may attempt to leverage this weakness to gain elevated privileges or access sensitive system information. Organizations should conduct thorough vulnerability assessments to identify systems running affected Intel CSME firmware versions and establish patch management procedures to ensure timely deployment of security updates. Additionally, implementing network segmentation and access controls can help limit the potential impact of successful exploitation attempts, while maintaining detailed audit logs of system access and privilege changes to support incident response activities.