Quantum Secular Labs / Blog / Advisories

CVE-2017-5691: Incorrect check in Intel processors from 6th and 7th Generation Intel Core Processor Families, Intel Xeon…

CVE-2017-5691 is rated critical with a CVSS v3.0 base score of 9.0 and NVD lists 22 affected products, including Intel Nuc7i3bnk Bios. Per its scoring, it can be exploited over the network. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Incorrect check in Intel processors from 6th and 7th Generation Intel Core Processor Families, Intel Xeon E3-1500M v5 and v6 Product Families, and Intel Xeon E3-1200 v5 and v6 Product Families allows compromised system firmware to impact SGX security via incorrect early system state.

Severity breakdown

CVSS v3.0 9.0: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

  • Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Privileges required: Low. A basic user account is enough.
  • User interaction: Required. A user must take an action, such as opening a file or following a link.
  • Scope: Changed. Impact reaches beyond the vulnerable component to other resources.
  • Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
  • Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
  • Availability impact: High. Total loss of availability; the component can be shut down.

Affected products

  • Intel Nuc7i3bnk Bios: all versions listed by NVD
  • Intel Nuc7i5bnk Bios: all versions listed by NVD
  • Intel Nuc7i7bnh Bios: all versions listed by NVD
  • Intel Stk2mv64cc Bios: all versions listed by NVD
  • Intel Stk2m3w64cc Bios: all versions listed by NVD
  • Intel Nuc6i7kyk Bios: all versions listed by NVD
  • Intel Nuc6i3syk Bios: all versions listed by NVD
  • Intel Nuc6i5syk Bios: all versions listed by NVD
  • Intel R1304sposhor Bios: all versions listed by NVD
  • Intel R1304sposhorr Bios: all versions listed by NVD
  • Intel R1208sposhorr Bios: all versions listed by NVD
  • Intel Lr1304spcfg1r Bios: all versions listed by NVD
  • Intel R1208sposhor Bios: all versions listed by NVD
  • Intel S1200spsr Bios: all versions listed by NVD
  • Intel S1200spor Bios: all versions listed by NVD

References