Intel this week released security patches to address a critical vulnerability in Active Management Technology (AMT) and Intel Standard Manageability (ISM).
The bug, which Intel calls improper buffer restrictions in network subsystems, could be abused by unauthorized users to escalate privileges via network access in provisioned AMT and ISM versions before 11.8.79, 11.12.79, 11.22.79, 12.0.68 and 14.0.39.
On un-provisioned systems, Intel reveals, an authenticated user may abuse the vulnerability to enable privilege escalation via local access.
Tracked as CVE-2020-8758, the security bug features a CVSS score of 9.8 for provisioned systems and a CVSS score of 7.8 on un-provisioned systems.
Intel also notes that firmware versions of AMT 3.x through 10.x are no longer supported and that they will not receive security updates to address the issue.
“Intel recommends that users of Intel AMT and Intel ISM update to the latest version provided by the system manufacturer that addresses these issues,” the chip maker says.
The company also announced the availability of patches for a potential security bug in the BIOS firmware for 8th, 9th and 10th generation Intel Core processors, which could lead to privilege escalation, denial of service, and/or information disclosure, provided that the attacker has physical access to an affected system.
Tracked as CVE-2020-0570, the flaw has a CVSS score of 7.6. The advisory for this issue also addresses a medium-severity information disclosure flaw in BIOS firmware for 8th Gen Intel Core processors and Intel Pentium Silver chips (CVE-2020-0571).
Security patches were released for three other medium-risk bugs in the BIOS firmware for 8th, 9th, and 10th Gen Core and Celeron 4000/5000 series processors, which could lead to elevation of privilege or denial of service (CVE-2020-8672 and CVE-2019-14557), or information disclosure (CVE-2020-8671).
Two low-severity flaws (CVE-2019-14558 and CVE-2019-14556) described in the same advisory could lead to denial of service.
Intel also announced a fix for a medium-severity flaw (CVE-2020-12302) in Intel Driver & Support Assistant before version 126.96.36.199, which could lead to privilege escalation via local access. Version 188.8.131.52 or later of Intel Driver & Support Assistant fix the vulnerability.