---
title: "CVE-2019-12499\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-2019-12499?format=md
keywords: index, follow
---

# CVE-2019-12499

Publication date 31 May 2019

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**8.1 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2019-12499?format=md#impact-score)

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## Description

Firejail before 0.9.60 allows truncation (resizing to length 0) of the
firejail binary on the host by running exploit code inside a firejail
sandbox and having the sandbox terminated. To succeed, certain conditions
need to be fulfilled: The jail (with the exploit code inside) needs to be
started as root, and it also needs to be terminated as root from the host
(either by stopping it ungracefully (e.g., SIGKILL), or by using the
--shutdown control command). This is similar to CVE-2019-5736.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| firejail | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 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 | Ignored end of life |
| 18.10 cosmic | Ignored end of life |
| 18.04 LTS bionic | Vulnerable |
| 16.04 LTS xenial | Vulnerable |
| 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)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

8.1 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.1 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12499)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-12499)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-12499)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-12499)

### Other references

* <https://github.com/netblue30/firejail/issues/2401>
* <https://www.cve.org/CVERecord?id=CVE-2019-12499>