---
title: 'USN-4180-1: Bash vulnerability | Ubuntu security notices'
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/notices/USN-4180-1
---

1. [Ubuntu Security Notices](https://ubuntu.com/security/notices)
2. USN-4180-1

---

# USN-4180-1: Bash vulnerability

Publication date

11 November 2019

Overview

Bash could be made to crash or execute arbitrary code if it received
a specially crafted input.

Releases

[12.04](https://ubuntu.com/security/notices?release=precise)

---

Open side navigation

## Packages

* [bash](https://ubuntu.com/security/cves?package=bash) - GNU Bourne Again SHell

## Details

It was discovered that Bash incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a crash or execute
arbitrary code.

## Update instructions

After a standard system update you need to restart Bash to make
all the necessary changes.

[Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security)

The problem can be corrected by updating your system to the following package versions:

| Ubuntu Release | Package Version |
| --- | --- |
| 12.04 precise | [bash](https://launchpad.net/ubuntu/+source/bash) –  [4.2-2ubuntu2.9](https://launchpad.net/ubuntu/+source/bash/4.2-2ubuntu2.9) | | |

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## References

* [CVE-2012-6711](https://ubuntu.com/security/CVE-2012-6711)