USN-4011-2: Jinja2 vulnerabilities

Releases

• Ubuntu 14.04 ESM
• Ubuntu 12.04

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

• python-jinja2 - 2.7.2-2ubuntu0.1~esm1
• python3-jinja2 - 2.7.2-2ubuntu0.1~esm1

Ubuntu 12.04

• python-jinja2 - 2.6-1ubuntu0.2
• python3-jinja2 - 2.6-1ubuntu0.2

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

References

• CVE-2016-10745
• CVE-2019-10906

Related notices

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