CVE-2020-8710 in Server Board
Summary
by MITRE
Buffer overflow in the bootloader for some Intel(R) Server Boards, Server Systems and Compute Modules before version 2.45 may allow a privileged 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-2020-8710 represents a critical buffer overflow flaw within the bootloader component of specific Intel server hardware platforms. This issue affects Intel Server Boards, Server Systems, and Compute Modules that operate with bootloader versions prior to 2.45, creating a potential pathway for privilege escalation through local access vectors. The vulnerability resides in the firmware layer that initializes system operations, making it particularly concerning for enterprise environments where server integrity is paramount. The buffer overflow condition occurs during the bootloader's processing of input data, where insufficient bounds checking allows maliciously crafted data to overwrite adjacent memory regions. This flaw falls under the CWE-121 category of stack-based buffer overflow, which is classified as a fundamental memory safety issue that has been a persistent concern in embedded systems and firmware development.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally compromises the integrity of the system boot process. An attacker with local access privileges could exploit this weakness to inject malicious code into the bootloader execution environment, potentially gaining unauthorized control over the system's initialization sequence. The implications are particularly severe in data center environments where multiple servers operate with similar firmware versions, as a successful exploitation could lead to widespread compromise across an organization's infrastructure. This vulnerability aligns with ATT&CK technique T1068 which describes 'Exploitation for Privilege Escalation' and T1542.003 which covers 'Sudo and Sudo Caching', as the attack vector involves leveraging local system access to elevate privileges through firmware manipulation. The bootloader's role as the first program to execute during system startup makes it an ideal target for attackers seeking persistent access, as any compromise at this level can establish a foothold that survives operating system reboots.
Mitigation strategies for CVE-2020-8710 must prioritize immediate firmware updates to version 2.45 or later, which contain the necessary patches to address the buffer overflow conditions. Organizations should implement comprehensive inventory management to identify all affected hardware platforms and establish a systematic update rollout process that minimizes operational disruption. The remediation process requires careful consideration of the update methodology, as bootloader updates often necessitate specific procedures that may include system downtime or specialized tools. Security teams should also implement monitoring solutions to detect anomalous behavior that might indicate exploitation attempts, particularly focusing on unexpected local access patterns or system modifications. Additional protective measures include enabling secure boot mechanisms, implementing firmware integrity checks, and establishing strict access controls for local system administration. The vulnerability underscores the importance of maintaining up-to-date firmware across all system components and highlights the need for robust supply chain security practices. Organizations should also consider implementing hardware security modules or trusted platform modules to provide additional layers of protection for critical boot components, as recommended in industry best practices for firmware security.