---
title: "CVE-2018-3613\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2018-3613?format=md
keywords: index, follow
---

# CVE-2018-3613

Publication date 27 March 2019

Last updated 25 August 2025

---

Ubuntu priority

**Low**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.8 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2018-3613?format=md#impact-score)

Toggle side navigation

## Description

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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| edk2 | 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Ignored end of life |
| 18.04 LTS bionic | Fixed 0~20180205.c0d9813c-2ubuntu0.3+esm1  Ubuntu Pro |
| 16.04 LTS xenial | Fixed 0~20160408.ffea0a2c-2ubuntu0.2+esm1  Ubuntu Pro |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2018-3613?format=md#patch-details)

### Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

[Get Ubuntu Pro](https://ubuntu.com/pro)
[30-day free trial](https://ubuntu.com/pro/free-trial)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| edk2 | * Upstream:   <https://git.qemu.org/?p=edk2.git;a=commit;h=b7dc8888f31402f410c53242839271ba3b94b619> |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.8 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Local |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.8 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3613)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-3613)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-3613)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-3613)

### Related Ubuntu Security Notices (USN)

+ [USN-6920-1](https://usn.ubuntu.com/USN-6920-1)
+ EDK II vulnerabilities
+ 29 July 2024

### Other references

* <https://bugzilla.tianocore.org/attachment.cgi?id=44>
* <https://edk2-docs.gitbooks.io/security-advisory/content/edk-ii-authenticated-variable-bypass.html>
* <https://edk2-docs.gitbooks.io/security-advisory/content/authvariable-timestamp-zeroing-on-append_write.html>
* <https://www.cve.org/CVERecord?id=CVE-2018-3613>