Ubuntu Security Notices
USN-4011-1

USN-4011-1: Jinja2 vulnerabilities

Publication date

6 June 2019

Overview

Several security issues were fixed in Jinja2.

Releases

19.04 18.10 18.04 LTS 16.04 LTS

Packages

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

Details

Olivier Dony discovered that Jinja incorrectly handled str.format. An
attacker could possibly use this issue to escape the sandbox. This issue
only affected Ubuntu 16.04 LTS. (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)

Olivier Dony discovered that Jinja incorrectly handled str.format. An
attacker could possibly use this issue to escape the sandbox. This issue
only affected Ubuntu 16.04 LTS. (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

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

Learn more about how to get the fixes.

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

Ubuntu Release	Package Version
19.04 disco	python-jinja2 – 2.10-1ubuntu0.19.04.1
19.04 disco	python3-jinja2 – 2.10-1ubuntu0.19.04.1
18.10 cosmic	python-jinja2 – 2.10-1ubuntu0.18.10.1
18.10 cosmic	python3-jinja2 – 2.10-1ubuntu0.18.10.1
18.04 bionic	python-jinja2 – 2.10-1ubuntu0.18.04.1
18.04 bionic	python3-jinja2 – 2.10-1ubuntu0.18.04.1
16.04 xenial	python-jinja2 – 2.8-1ubuntu0.1
16.04 xenial	python3-jinja2 – 2.8-1ubuntu0.1

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

USN-4011-2

USN-4011-2