USN-4011-2: Jinja2 vulnerabilities

06 June 2019

Several security issues were fixed in Jinja2.

Releases

Packages

  • jinja2 - small but fast and easy to use stand-alone template engine

Details

USN-4011-1 fixed several vulnerabilities in Jinja2. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Olivier Dony discovered that Jinja incorrectly handled str.format. An
attacker could possibly use this issue to escape the sandbox.
(CVE-2016-10745)

Brian Welch discovered that Jinja incorrectly handled str.format_map. An
attacker could possibly use this issue to escape the sandbox.
(CVE-2019-10906)

Update instructions

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

Ubuntu 14.04
Ubuntu 12.04

In general, a standard system update will make all the necessary changes.

Related notices

  • USN-4011-1: python3-jinja2, python-jinja2-doc, jinja2, python-jinja2