CVE-2018-19321

GIGABYTE Multiple Products Privilege Escalation

7.8 HIGHActively exploited (CISA KEV)Used in ransomwarePublic exploitEPSS 3.70%

Published21 Dec 2018
Added to CISA KEV24 Oct 2022
Remediation due14 Nov 2022

Description

The GPCIDrv and GDrv low-level drivers in GIGABYTE APP Center v1.05.21 and earlier, AORUS GRAPHICS ENGINE before 1.57, XTREME GAMING ENGINE before 1.26, and OC GURU II v2.08 expose functionality to read and write arbitrary physical memory. This could be leveraged by a local attacker to elevate privileges.

CVSS 3.1 breakdown

Attack vectorLocal

Attack complexityLow

Privileges requiredLow

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Gigabyte Aorus Graphics Engine< 1.57

Gigabyte App Center< 19.0422.1

Gigabyte Oc Guru Ii2.08

Gigabyte Xtreme Gaming Engine< 1.26

Remediation

Fixed in

Gigabyte Aorus Graphics Engine≥ 1.57

Gigabyte App Center≥ 19.0422.1

Gigabyte Xtreme Gaming Engine≥ 1.26

Patch & vendor advisories

https://www.gigabyte.com/Support/Security/1801

References

http://seclists.org/fulldisclosure/2018/Dec/39ExploitMailing ListThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-19321US Government Resource
https://www.gigabyte.com/Support/Security/1801Vendor Advisory
https://www.secureauth.com/labs/advisories/gigabyte-drivers-elevation-privilege-vulnerabilitiesBroken LinkExploitThird Party Advisory
http://www.securityfocus.com/bid/106252Broken LinkThird Party AdvisoryVDB Entry

Frequently asked

Is CVE-2018-19321 being actively exploited?

Yes. CVE-2018-19321 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 24 Oct 2022. It has been used in ransomware campaigns.

How severe is CVE-2018-19321?

CVE-2018-19321 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 3.70% probability of exploitation.

Which products are affected by CVE-2018-19321?

Affected products include Gigabyte Aorus Graphics Engine, Gigabyte App Center, Gigabyte Oc Guru Ii, Gigabyte Xtreme Gaming Engine.

How do I fix CVE-2018-19321?

Upgrade affected software to a fixed version, for example Gigabyte Aorus Graphics Engine 1.57, Gigabyte App Center 19.0422.1, Gigabyte Xtreme Gaming Engine 1.26 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2018-19321 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.