USN-4011-1: Jinja2 vulnerabilities

Releases

• Ubuntu 19.04
• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

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)

Update instructions

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

Ubuntu 19.04

• python-jinja2 - 2.10-1ubuntu0.19.04.1
• python3-jinja2 - 2.10-1ubuntu0.19.04.1

Ubuntu 18.10

• python-jinja2 - 2.10-1ubuntu0.18.10.1
• python3-jinja2 - 2.10-1ubuntu0.18.10.1

Ubuntu 18.04

• python-jinja2 - 2.10-1ubuntu0.18.04.1
• python3-jinja2 - 2.10-1ubuntu0.18.04.1

Ubuntu 16.04

• python-jinja2 - 2.8-1ubuntu0.1
• python3-jinja2 - 2.8-1ubuntu0.1

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

References

• CVE-2016-10745
• CVE-2019-10906

Related notices

• USN-4011-2: python3-jinja2, python-jinja2-doc, jinja2, python-jinja2