PT-2016-3098 · Ami · Ami Usbrt Microcode

Published 2016-10-03 · Updated 2016-10-03

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions AMI UsbRt microcode versions (affected versions not specified)

Description The issue is related to errors in the System Management Interrupt (SMI) handler of the AMI UsbRt microcode for Intel NUC motherboards. Exploitation of this issue can allow a local attacker to gain full control over the system by executing arbitrary code in System Management Mode (SMM), potentially leading to disabling of flash memory write protection, installation of third-party microcode, disabling of Secure Boot, and other malicious actions.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-17

Related Identifiers

BDU:2017-00760

Affected Products

Ami Usbrt Microcode

References · 4

• https://bdu.fstec.ru/vul/2017-00760 · Security Note
• https://github.com/Cr4sh/Aptiocalypsis · Note
• https://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00057&languageid=en-fr · Note
• http://blog.cr4.sh/2016/10/exploiting-ami-aptio-firmware.html · Note