CVE-2020-8716 in Server Board
Summary
by MITRE
Improper access control for some Intel(R) Server Boards, Server Systems and Compute Modules before version 1.59 may allow an authenticated user to potentially enable denial of service via local access.
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Analysis
by VulDB Data Team • 11/09/2020
The vulnerability identified as CVE-2020-8716 represents a critical access control flaw affecting Intel server boards, server systems, and compute modules. This weakness stems from inadequate authorization mechanisms that fail to properly validate user credentials and privileges before granting access to system resources. The vulnerability specifically impacts devices running firmware versions prior to 1.59, creating a window of opportunity for malicious actors to exploit the system's security model. The flaw allows authenticated users to potentially disrupt system operations through local access methods, fundamentally undermining the integrity of the device's security architecture. This issue falls under the broader category of improper access control vulnerabilities that have been systematically catalogued under CWE-284, which addresses insufficient access control mechanisms in software systems.
The technical implementation of this vulnerability manifests through the failure of the affected Intel products to enforce proper privilege separation during system operations. When an authenticated user gains access to the system, the firmware fails to adequately validate whether the user should possess the specific privileges required to execute denial of service operations. This weakness creates an attack surface where legitimate users can escalate their privileges or exploit existing access to disrupt normal system functionality. The local access requirement means that attackers must already have some level of system presence, typically through legitimate administrative credentials or physical access, but the vulnerability allows them to leverage this access in ways that were not intended by the system designers. This aligns with ATT&CK technique T1068 which covers the use of local system privileges to gain unauthorized access to system resources.
The operational impact of CVE-2020-8716 extends beyond simple service disruption to potentially compromise the overall reliability and availability of critical server infrastructure. Organizations relying on affected Intel server products face significant risk of unauthorized denial of service attacks that could impact business continuity, data availability, and system uptime. The vulnerability particularly affects enterprise environments where server systems operate continuously and where any disruption can cascade across multiple dependent services and applications. The local access requirement does not mitigate the severity of the issue, as it assumes that attackers have already gained some level of legitimate access to the system, making the vulnerability particularly dangerous in environments where privileged accounts are compromised. This weakness can be exploited to create persistent denial of service conditions that may be difficult to detect and remediate.
Mitigation strategies for CVE-2020-8716 center on firmware updates and access control hardening measures. Organizations should immediately deploy the firmware update version 1.59 or later that addresses this vulnerability, as provided by Intel. The update implements proper access control validation mechanisms that prevent authenticated users from executing unauthorized denial of service operations. Additionally, system administrators should implement principle of least privilege access controls, ensuring that only necessary personnel have access to critical system functions. Network segmentation and monitoring solutions should be deployed to detect unusual access patterns that might indicate exploitation attempts. The vulnerability highlights the importance of maintaining up-to-date firmware and implementing robust access control policies, as outlined in security frameworks such as NIST SP 800-53 and ISO 27001. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other system components and ensure comprehensive protection against similar threats.