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Ubuntu Security Notice USN-5767-2

Ubuntu Security Notice 5767-2 - USN-5767-1 fixed a vulnerability in Python. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. It was discovered that Python incorrectly handled certain IDNA inputs. An attacker could possibly use this issue to expose sensitive information denial of service, or cause a crash.

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Ubuntu Security Notice USN-5767-2
December 08, 2022

python2.7, python3.5 vulnerability

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

  • Ubuntu 16.04 ESM
  • Ubuntu 14.04 ESM

Summary:

Python could be made to denial of service if it received
a specially crafted IDNA input.

Software Description:

  • python2.7: An interactive high-level object-oriented language
  • python3.5: An interactive high-level object-oriented language

Details:

USN-5767-1 fixed a vulnerability in Python. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that Python incorrectly handled certain IDNA inputs.
An attacker could possibly use this issue to expose sensitive information
denial of service, or cause a crash.
(CVE-2022-45061)

Update instructions:

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

Ubuntu 16.04 ESM:
libpython2.7 2.7.12-1ubuntu0~16.04.18+esm3
libpython3.5 3.5.2-2ubuntu0~16.04.13+esm6
python2.7 2.7.12-1ubuntu0~16.04.18+esm3
python3.5 3.5.2-2ubuntu0~16.04.13+esm6

Ubuntu 14.04 ESM:
libpython2.7 2.7.6-8ubuntu0.6+esm13
python2.7 2.7.6-8ubuntu0.6+esm13

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

References:
https://ubuntu.com/security/notices/USN-5767-2
https://ubuntu.com/security/notices/USN-5767-1
CVE-2022-45061

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