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CVE-2017-3197

GIGABYTE BRIX UEFI firmware fails to securely implement BIOS write protection

Published: Jul 9, 2018Updated: Nov 21, 2024 Sources: CVE List NVDCWE-693
9.8CRITICAL
NVD MITRE
EPSS Score
5.6%
Top 7.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

GIGABYTE BRIX UEFI firmware for the GB-BSi7H-6500 (version F6) and GB-BXi7-5775 (version F2) platforms does not securely implement BIOSWE, BLE, SMM_BWP, and PRx features. As a result, the BIOS is not protected from arbitrary write access and may permit modifications to the SPI flash.

In plain language

AI Worth attention

This GIGABYTE BRIX UEFI firmware flaw lets an attacker change core BIOS settings over the network, even without login or clicks, so a typical small business should treat it as a serious risk if the device can be reached from the internet.

Executive summary

CVE-2017-3197 is an unauthenticated network vulnerability in affected GIGABYTE BRIX UEFI firmware where missing or improperly implemented BIOS write-protection/security-lock features allow an attacker to gain unlimited control over core device configuration and permanently alter underlying firmware.

If affected, business impact
Firmware tamperingPersistent system compromiseFull device takeoverOperations disruption

What to do now

  1. Check whether you run one of these exact models/firmware: gb-bsi7h-6500 firmware F6 or gb-bxi7-5775 firmware F2.
  2. If you match, assume attackers who can reach the device can make persistent firmware changes.
  3. Contact GIGABYTE (or your VAR/IT vendor) and ask for the official update or mitigation for CVE-2017-3197 for your exact model and firmware version.
  4. Restrict network access to the affected device so it is not reachable from the internet (only allow required internal connections; block inbound traffic at the firewall).
  5. If you cannot update quickly, isolate the device on a tightly controlled network and ensure no exposed remote-management ports are reachable from outside your office network.
  6. Document the current firmware state and re-check periodically for vendor releases because no fix is available in the information provided here.
May need vendor / contractor work

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-693CWE-20

Affected Products

GIGABYTE
commercial·TWaka app center, aorus graphics engine, oc guru ii
gb-bsi7h-6500 firmware
Hardware Firmware
gb-bxi7-5775 firmware
Hardware Firmware
GB-BSi7H-6500
Hardware Firmware
GB-BXi7-5775
Hardware Firmware

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
Is your org exposed to CVE-2017-3197?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

http://www.securityfocus.com/bid/97294
securityfocus.com
https://github.com/CylanceVulnResearch/disclosures/blob/master/CLVA-2017-01-001.md
github.com
https://github.com/CylanceVulnResearch/disclosures/blob/master/CLVA-2017-01-002.md
github.com
and 2 more references View all →

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