CVE-2023-23908 in Xeon
Summary
by MITRE • 08/11/2023
Improper access control in some 3rd Generation Intel(R) Xeon(R) Scalable processors may allow a privileged user to potentially enable information disclosure via local access.
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Analysis
by VulDB Data Team • 12/21/2024
The vulnerability identified as CVE-2023-23908 represents a critical access control flaw within third generation Intel Xeon Scalable processors that could potentially compromise system security through information disclosure. This issue affects a broad range of enterprise and data center systems that rely on Intel's latest processor architecture, creating significant risks for organizations handling sensitive data. The vulnerability stems from inadequate privilege validation mechanisms within the processor's security framework, allowing authenticated users with elevated privileges to bypass intended access controls and potentially extract confidential information from system memory or other protected resources.
The technical root cause of this vulnerability lies in the improper implementation of access control mechanisms within the processor's microarchitecture, specifically within the memory management and privilege level enforcement components. This flaw operates at the hardware level, making it particularly challenging to detect and remediate compared to software-based vulnerabilities. The vulnerability is classified as a weakness in privilege management according to CWE-284, which governs improper access control issues in system security. Attackers with privileged access could exploit this weakness to gain unauthorized access to sensitive information that should be restricted to higher privilege levels, potentially including system configuration data, user credentials, or proprietary business information.
The operational impact of this vulnerability extends beyond simple information disclosure, as it fundamentally undermines the security model of systems relying on Intel Xeon Scalable processors. Organizations utilizing affected hardware may experience unauthorized data exposure, potential credential theft, and compromise of system integrity. The local access requirement means that attackers must already have some level of system access or authentication, but this limitation does not prevent significant damage to system security. This vulnerability aligns with ATT&CK technique T1078 which covers valid accounts and privilege escalation, as the flaw allows for unauthorized access to restricted resources through legitimate privileged access. The implications are particularly severe in enterprise environments where these processors power critical infrastructure, cloud services, and data centers where information confidentiality is paramount.
Mitigation strategies for CVE-2023-23908 require a multi-layered approach combining firmware updates, system hardening, and monitoring procedures. Organizations should immediately apply the latest processor microcode updates provided by Intel to address the underlying hardware vulnerability. System administrators must implement enhanced monitoring for unauthorized access attempts and privilege escalation activities, leveraging security information and event management tools to detect potential exploitation attempts. Network segmentation and access control policies should be strengthened to limit the potential impact of any successful exploitation. Additionally, organizations should conduct comprehensive vulnerability assessments to identify systems running affected processor generations and implement additional security controls such as memory encryption and secure boot mechanisms to reduce the attack surface. The remediation process requires careful coordination with hardware vendors and system integrators to ensure complete patch deployment across all affected systems while minimizing operational disruption.