--- title: "CVE-2019-17012\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-2019-17012?format=md keywords: index, follow --- # CVE-2019-17012 Publication date 4 December 2019 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-2019-17012?format=md#impact-score) Toggle side navigation ## Description Mozilla developers reported memory safety bugs present in Firefox 70 and Firefox ESR 68.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71. [Read the notes from the security team](https://ubuntu.com/security/CVE-2019-17012?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | firefox | 24.04 LTS noble | Fixed 71.0+build5-0ubuntu1 | | 23.10 mantic | Fixed 71.0+build5-0ubuntu1 | | 23.04 lunar | Fixed 71.0+build5-0ubuntu1 | | 22.10 kinetic | Fixed 71.0+build5-0ubuntu1 | | 22.04 LTS jammy | Fixed 71.0+build5-0ubuntu1 | | 21.10 impish | Fixed 71.0+build5-0ubuntu1 | | 21.04 hirsute | Fixed 71.0+build5-0ubuntu1 | | 20.10 groovy | Fixed 71.0+build5-0ubuntu1 | | 20.04 LTS focal | Fixed 71.0+build5-0ubuntu1 | | 19.10 eoan | Fixed 71.0+build5-0ubuntu0.19.10.1 | | 19.04 disco | Fixed 71.0+build5-0ubuntu0.19.04.1 | | 18.04 LTS bionic | Fixed 71.0+build5-0ubuntu0.18.04.1 | | 16.04 LTS xenial | Fixed 71.0+build5-0ubuntu0.16.04.1 | | 14.04 LTS trusty | Not in release | | mozjs38 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 23.04 lunar | Not in release | | 22.10 kinetic | Not in release | | 22.04 LTS jammy | Not in release | | 21.10 impish | Not in release | | 21.04 hirsute | Not in release | | 20.10 groovy | Not in release | | 20.04 LTS focal | Not in release | | 19.10 eoan | Not in release | | 19.04 disco | Not in release | | 18.04 LTS bionic | Ignored | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | | mozjs52 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 23.04 lunar | Not in release | | 22.10 kinetic | Not in release | | 22.04 LTS jammy | Not in release | | 21.10 impish | Not in release | | 21.04 hirsute | Not in release | | 20.10 groovy | Ignored end of life | | 20.04 LTS focal | Ignored | | 19.10 eoan | Ignored end of life | | 19.04 disco | Ignored end of life | | 18.04 LTS bionic | Ignored | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | | mozjs60 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 23.04 lunar | Not in release | | 22.10 kinetic | Not in release | | 22.04 LTS jammy | Not in release | | 21.10 impish | Not in release | | 21.04 hirsute | Not in release | | 20.10 groovy | Not in release | | 20.04 LTS focal | Not in release | | 19.10 eoan | Ignored end of life | | 19.04 disco | Ignored end of life | | 18.04 LTS bionic | Not in release | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | | thunderbird | 24.04 LTS noble | Fixed 1:68.3.0+build2-0ubuntu1 | | 23.10 mantic | Fixed 1:68.3.0+build2-0ubuntu1 | | 23.04 lunar | Fixed 1:68.3.0+build2-0ubuntu1 | | 22.10 kinetic | Fixed 1:68.3.0+build2-0ubuntu1 | | 22.04 LTS jammy | Fixed 1:68.3.0+build2-0ubuntu1 | | 21.10 impish | Fixed 1:68.3.0+build2-0ubuntu1 | | 21.04 hirsute | Fixed 1:68.3.0+build2-0ubuntu1 | | 20.10 groovy | Fixed 1:68.3.0+build2-0ubuntu1 | | 20.04 LTS focal | Fixed 1:68.3.0+build2-0ubuntu1 | | 19.10 eoan | Fixed 1:68.4.1+build1-0ubuntu0.19.10.1 | | 19.04 disco | Ignored end of life | | 18.04 LTS bionic | Fixed 1:68.4.1+build1-0ubuntu0.18.04.1 | | 16.04 LTS xenial | Fixed 1:68.7.0+build1-0ubuntu0.16.04.2 | | 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) ## Notes --- ### [tyhicks](https://launchpad.net/~tyhicks) mozjs contains a copy of the SpiderMonkey JavaScript engine ## 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:3.1/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-2019-17012) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-17012) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-17012) * [Debian](https://security-tracker.debian.org/tracker/CVE-2019-17012) ### Related Ubuntu Security Notices (USN) + [USN-4216-2](https://usn.ubuntu.com/USN-4216-2) + Firefox vulnerabilities + 13 December 2019 + [USN-4216-1](https://usn.ubuntu.com/USN-4216-1) + Firefox vulnerabilities + 9 December 2019 + [USN-4335-1](https://usn.ubuntu.com/USN-4335-1) + Thunderbird vulnerabilities + 21 April 2020 + [USN-4241-1](https://usn.ubuntu.com/USN-4241-1) + Thunderbird vulnerabilities + 16 January 2020 ### Other references * * * *