2020-14032 | ASRock 4×4 BOX-R1000 SMM access control

By Max On Jul 28, 2021

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5.3	$0-$5k	0.05

A vulnerability was found in ASRock 4×4 BOX-R1000 up to P1.39. It has been classified as critical. This affects some unknown functionality of the component SMM. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-284. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

ASRock 4×4 BOX-R1000 before BIOS P1.40 allows privilege escalation via code execution in the SMM.

The weakness was released 07/23/2021. The advisory is shared at dannyodler.medium.com. This vulnerability is uniquely identified as CVE-2020-14032 since 06/11/2020. The exploitability is told to be easy. The attack can only be initiated within the local network. A authentication is required for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version P1.40 eliminates this vulnerability.

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