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Ubuntu Security Notice USN-4011-1

Ubuntu Security Notice USN-4011-1
Posted Jun 6, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4011-1 - 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. Brian Welch discovered that Jinja incorrectly handled str.format_map. An attacker could possibly use this issue to escape the sandbox.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2016-10745, CVE-2019-10906
MD5 | 35714135c42e4cbc629e4cd3cd3d4236

Ubuntu Security Notice USN-4011-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4011-1
June 06, 2019

jinja2 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Jinja2.

Software Description:
- 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 LTS:
python-jinja2 2.10-1ubuntu0.18.04.1
python3-jinja2 2.10-1ubuntu0.18.04.1

Ubuntu 16.04 LTS:
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:
https://usn.ubuntu.com/4011-1
CVE-2016-10745, CVE-2019-10906

Package Information:
https://launchpad.net/ubuntu/+source/jinja2/2.10-1ubuntu0.19.04.1
https://launchpad.net/ubuntu/+source/jinja2/2.10-1ubuntu0.18.10.1
https://launchpad.net/ubuntu/+source/jinja2/2.10-1ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/jinja2/2.8-1ubuntu0.1

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