CVE-2020-8730 in Server Board
Summary
by MITRE
Heap-based overflow for some Intel(R) Server Boards, Server Systems and Compute Modules before version 1.59 may allow an authenticated user to potentially enable escalation of privilege via local access.
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Analysis
by VulDB Data Team • 11/09/2020
The vulnerability identified as CVE-2020-8730 represents a critical heap-based buffer overflow affecting Intel server boards, systems, and compute modules with firmware versions prior to 1.59. This flaw resides within the firmware implementation of these enterprise-grade hardware components, creating a potential pathway for privilege escalation through local access. The vulnerability demonstrates characteristics consistent with heap corruption issues that can be exploited by authenticated attackers who possess local system access, making it particularly concerning for environments where physical or administrative access controls may be compromised.
The technical nature of this heap-based overflow stems from improper memory management within the affected firmware components, specifically within the system's firmware implementation. When processing certain inputs or operations, the firmware fails to properly validate buffer boundaries, allowing malicious data to overwrite adjacent memory locations within the heap allocation space. This memory corruption can potentially overwrite critical control data structures, function pointers, or other sensitive memory regions that govern system behavior. The vulnerability's classification as a heap-based overflow aligns with CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite heap memory.
From an operational impact perspective, this vulnerability creates significant security implications for enterprise environments that rely on Intel server infrastructure. An authenticated local attacker can exploit this weakness to escalate privileges from standard user level to administrative or root level access, potentially compromising entire server environments. The attack vector requires local access, which means physical access or legitimate administrative credentials must be obtained first, but once achieved, the privilege escalation capability can be leveraged for persistent access, data exfiltration, or further network infiltration. This vulnerability directly impacts the integrity and confidentiality of server-based systems, particularly those operating in sensitive environments where physical security controls may be insufficient.
The exploitation of CVE-2020-8730 aligns with several tactics described in the MITRE ATT&CK framework, specifically targeting privilege escalation techniques through local system access. The vulnerability enables an attacker to move beyond initial access boundaries and gain elevated privileges within the system. Organizations should implement immediate remediation measures including firmware updates to version 1.59 or later, which contain patches addressing the heap overflow conditions. Additional mitigations include implementing strict access controls, monitoring for unauthorized local access attempts, and conducting comprehensive security assessments of server infrastructure. The vulnerability underscores the importance of firmware security and the need for regular updates of system components, as highlighted in industry standards and best practices for enterprise security management.