Logic issue in variable service module for EDK II/UDK2018/UDK2017/UDK2015 may allow an authenticated user to potentially enable escalation…

published 2019-03-27 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-15467

cvss: 7.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits: 0; none known

Logic issue in variable service module for EDK II/UDK2018/UDK2017/UDK2015 may allow an authenticated user to potentially enable escalation of privilege, information disclosure and/or denial of service via local access.

Patch / fix

distros 4 links 1

ubuntu red hat suse opensuse

edk2 Ubuntu Pro 16.04 LTS 0~20160408.ffea0a2c-2ubuntu0.2+esm1
edk2 Ubuntu Pro 18.04 LTS 0~20180205.c0d9813c-2ubuntu0.3+esm1

ubuntu advisories UBUNTU-CVE-2018-3613

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

ovmf RHEL 7 20180508-6.gitee3198e672e2.el7
OVMF RHEL 7 20180508-6.gitee3198e672e2.el7

red hat advisories RHSA-2019:2125

ovmf SLES for SAP 12 SP3, SLES 12 SP3 2017+git1492060560.b6d11d7c46-4.17.1
ovmf SLES for SAP 12 SP4, SLES 12 SP4, SLED 12 SP4 2017+git1510945757.b2662641d5-3.5.1
ovmf SLE Module for Server Applications 15 2017+git1510945757.b2662641d5-5.11.1

suse advisories SUSE-SU-2018:4207-1 SUSE-SU-2018:4194-1 SUSE-SU-2018:4155-1

ovmf openSUSE Tumbleweed 202105-3.4

opensuse advisories openSUSE-SU-2024:11134-1

edk2-docs.gitbooks.io/security-advisory/content/authvariable-timestamp-zeroing-o… advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-3613 updated 2026-11-05 cvss 6.7

edk2: Logic error in MdeModulePkg in EDK II firmware allows for privilege escalation by authenticated users

Red Hat Enterprise Linux Server (v. 7) ovmf 20180508-6.gitee3198e672e2.el7, OVMF 20180508-6.gitee3198e672e2.el7
fixed: vendor fix RHSA-2019:2125
Red Hat Enterprise Linux 8 edk2, edk2-ovmf, edk2-aarch64
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.8	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

Extensible Firmware Interface Development Kit (EDK II) Extensible Firmware Interface Development Kit (EDK II)

References

edk2-docs.gitbooks.io /security-advisory/content/authvariable-timestamp-zeroing-on-append_write.html
patch, third-party-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/4ABTDKZK2G5XP6JCO3HXMPOA2NRTIYDZ/
vendor-advisory
access.redhat.com /errata/RHSA-2019:2125
vendor-advisory
support.hpe.com /hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03912en_us

Sources

CVE List CVE-2018-3613
NVD CVE-2018-3613

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary