---
title: "CVE-2018-12361\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-2018-12361?format=md
keywords: index, follow
---

# CVE-2018-12361

Publication date 27 June 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**8.8 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2018-12361?format=md#impact-score)

Toggle side navigation

## Description

An integer overflow can occur in the SwizzleData code while calculating
buffer sizes. The overflowed value is used for subsequent graphics
computations when their inputs are not sanitized which results in a
potentially exploitable crash. This vulnerability affects Thunderbird < 60,
Firefox ESR < 60.1, and Firefox < 61.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| firefox | 18.04 LTS bionic | Fixed 61.0+build3-0ubuntu0.18.04.1 |
| 17.10 artful | Fixed 61.0+build3-0ubuntu0.17.10.1 |
| 16.04 LTS xenial | Fixed 61.0+build3-0ubuntu0.16.04.2 |
| 14.04 LTS trusty | Fixed 61.0+build3-0ubuntu0.14.04.2 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

8.8 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.8 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12361)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-12361)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-12361)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-12361)

### Related Ubuntu Security Notices (USN)

+ [USN-3705-1](https://usn.ubuntu.com/USN-3705-1)
+ Firefox vulnerabilities
+ 5 July 2018

### Other references

* <https://www.mozilla.org/en-US/security/advisories/mfsa2018-15/#CVE-2018-12361>
* <https://www.cve.org/CVERecord?id=CVE-2018-12361>