Use After Free Affecting bash package, versions <4.3-14ubuntu1.2


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UBUNTU1604-BASH-351565
  • published23 Jan 2017
  • disclosed23 Jan 2017

Introduced: 23 Jan 2017

CVE-2016-9401  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 bash to version 4.3-14ubuntu1.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bash package and not the bash package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

popd in bash might allow local users to bypass the restricted shell and cause a use-after-free via a crafted address.

CVSS Scores

version 3.1