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==========================================================================
Ubuntu Security Notice USN-4962-1
May 19, 2021

python-babel vulnerability
==========================================================================

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

- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

Babel code be made to execute arbitrary code if it received a specially
crafted input.

Software Description:
- python-babel: tools for internationalizing Python applications

Details:

It was discovered that Babel incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.

Update instructions:

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

Ubuntu 21.04:
  python-babel-localedata         2.8.0+dfsg.1-6ubuntu0.1
  python3-babel                   2.8.0+dfsg.1-6ubuntu0.1

Ubuntu 20.10:
  python-babel-localedata         2.8.0+dfsg.1-4ubuntu0.1
  python3-babel                   2.8.0+dfsg.1-4ubuntu0.1

Ubuntu 20.04 LTS:
  python-babel                    2.6.0+dfsg.1-1ubuntu2.2
  python-babel-localedata         2.6.0+dfsg.1-1ubuntu2.2
  python3-babel                   2.6.0+dfsg.1-1ubuntu2.2

Ubuntu 18.04 LTS:
  python-babel                    2.4.0+dfsg.1-2ubuntu1.1
  python-babel-localedata         2.4.0+dfsg.1-2ubuntu1.1
  python3-babel                   2.4.0+dfsg.1-2ubuntu1.1

Ubuntu 16.04 ESM:
  python-babel                    1.3+dfsg.1-6ubuntu0.1~esm1
  python-babel-localedata         1.3+dfsg.1-6ubuntu0.1~esm1
  python3-babel                   1.3+dfsg.1-6ubuntu0.1~esm1

Ubuntu 14.04 ESM:
  python-babel                    1.3+dfsg.1-2ubuntu2+esm1
  python-babel-localedata         1.3+dfsg.1-2ubuntu2+esm1
  python3-babel                   1.3+dfsg.1-2ubuntu2+esm1

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

References:
  https://ubuntu.com/security/notices/USN-4962-1
  CVE-2021-20095

Package Information:
  https://launchpad.net/ubuntu/+source/python-babel/2.8.0+dfsg.1-6ubuntu0.1
  https://launchpad.net/ubuntu/+source/python-babel/2.8.0+dfsg.1-4ubuntu0.1
  https://launchpad.net/ubuntu/+source/python-babel/2.6.0+dfsg.1-1ubuntu2.2
  https://launchpad.net/ubuntu/+source/python-babel/2.4.0+dfsg.1-2ubuntu1.1

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