Several security issues were fixed in Jinja2.
USN-4011-1 fixed several vulnerabilities in Jinja2. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
6 June 2019
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Jinja2.
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)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.