Advisory Published

USN-4011-1: Jinja2 vulnerabilities

First published: Thu Jun 06 2019(Updated: )

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)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/python-jinja2<2.10-1ubuntu0.19.04.1
2.10-1ubuntu0.19.04.1
=19.04
All of
ubuntu/python3-jinja2<2.10-1ubuntu0.19.04.1
2.10-1ubuntu0.19.04.1
=19.04
All of
ubuntu/python-jinja2<2.10-1ubuntu0.18.10.1
2.10-1ubuntu0.18.10.1
=18.10
All of
ubuntu/python3-jinja2<2.10-1ubuntu0.18.10.1
2.10-1ubuntu0.18.10.1
=18.10
All of
ubuntu/python-jinja2<2.10-1ubuntu0.18.04.1
2.10-1ubuntu0.18.04.1
=18.04
All of
ubuntu/python3-jinja2<2.10-1ubuntu0.18.04.1
2.10-1ubuntu0.18.04.1
=18.04
All of
ubuntu/python-jinja2<2.8-1ubuntu0.1
2.8-1ubuntu0.1
=16.04
All of
ubuntu/python3-jinja2<2.8-1ubuntu0.1
2.8-1ubuntu0.1
=16.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this security notice?

    The vulnerability ID for this security notice is USN-4011-1.

  • What is the severity level of this vulnerability?

    The severity level of this vulnerability is not mentioned.

  • What is the description of this vulnerability?

    The vulnerability is related to Jinja2 and it incorrectly handles str.format and str.format_map, which could allow an attacker to escape the sandbox.

  • Which versions of Ubuntu are affected by this vulnerability?

    This vulnerability only affects Ubuntu 16.04 LTS, Ubuntu 18.04, and Ubuntu 19.04.

  • How can I fix this vulnerability?

    To fix this vulnerability, update the python-jinja2 and python3-jinja2 packages to version 2.10-1ubuntu0.19.04.1 for Ubuntu 19.04, version 2.10-1ubuntu0.18.10.1 for Ubuntu 18.10, version 2.10-1ubuntu0.18.04.1 for Ubuntu 18.04, and version 2.8-1ubuntu0.1 for Ubuntu 16.04.

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