Ubuntu 5342-1: Python vulnerabilities | LinuxSecurity.com
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Ubuntu Security Notice USN-5342-1
March 28, 2022

python2.7, python3.4, python3.5, python3.6, python3.8 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

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

Summary:

Several security issues were fixed in Python.

Software Description:
- python3.8: An interactive high-level object-oriented language
- python2.7: An interactive high-level object-oriented language
- python3.6: An interactive high-level object-oriented language
- python3.5: An interactive high-level object-oriented language
- python3.4: An interactive high-level object-oriented language

Details:

David Schwörer discovered that Python incorrectly handled certain inputs.
An attacker could possibly use this issue to expose sensitive information.
This issue only affected Ubuntu 18.04 LTS. (CVE-2021-3426)

It was discovered that Python incorrectly handled certain FTP requests.
An attacker could possibly use this issue to expose sensitive information.
This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 LTS.
(CVE-2021-4189)

It was discovered that Python incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2022-0391)

Update instructions:

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

Ubuntu 20.04 LTS:
  python3.8                       3.8.10-0ubuntu1~20.04.4
  python3.8-minimal               3.8.10-0ubuntu1~20.04.4

Ubuntu 18.04 LTS:
  python2.7                       2.7.17-1~18.04ubuntu1.7
  python2.7-minimal               2.7.17-1~18.04ubuntu1.7
  python3.6                       3.6.9-1~18.04ubuntu1.7
  python3.6-minimal               3.6.9-1~18.04ubuntu1.7

Ubuntu 16.04 ESM:
  python2.7                       2.7.12-1ubuntu0~16.04.18+esm1
  python2.7-minimal               2.7.12-1ubuntu0~16.04.18+esm1
  python3.5                       3.5.2-2ubuntu0~16.04.13+esm2
  python3.5-minimal               3.5.2-2ubuntu0~16.04.13+esm2

Ubuntu 14.04 ESM:
  python3.4                       3.4.3-1ubuntu1~14.04.7+esm12
  python3.4-minimal               3.4.3-1ubuntu1~14.04.7+esm12

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

References:
  https://ubuntu.com/security/notices/USN-5342-1
  CVE-2021-3426, CVE-2021-4189, CVE-2022-0391

Package Information:
  https://launchpad.net/ubuntu/+source/python3.8/3.8.10-0ubuntu1~20.04.4
  https://launchpad.net/ubuntu/+source/python2.7/2.7.17-1~18.04ubuntu1.7
  https://launchpad.net/ubuntu/+source/python3.6/3.6.9-1~18.04ubuntu1.7

Ubuntu 5342-1: Python vulnerabilities

March 28, 2022

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: Several security issues were fixed in Python. Software Description: - python3.8: An interactive high-level object-oriented language - python2.7: An interactive high-level object-oriented language - python3.6: An interactive high-level object-oriented language - python3.5: An interactive high-level object-oriented language - python3.4: An interactive high-level object-oriented language Details: David Schwörer discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 18.04 LTS. (CVE-2021-3426) It was discovered that Python incorrectly handled certain FTP requests. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 LTS. (CVE-2021-4189) It was discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. (CVE-2022-0391)

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: python3.8 3.8.10-0ubuntu1~20.04.4 python3.8-minimal 3.8.10-0ubuntu1~20.04.4 Ubuntu 18.04 LTS: python2.7 2.7.17-1~18.04ubuntu1.7 python2.7-minimal 2.7.17-1~18.04ubuntu1.7 python3.6 3.6.9-1~18.04ubuntu1.7 python3.6-minimal 3.6.9-1~18.04ubuntu1.7 Ubuntu 16.04 ESM: python2.7 2.7.12-1ubuntu0~16.04.18+esm1 python2.7-minimal 2.7.12-1ubuntu0~16.04.18+esm1 python3.5 3.5.2-2ubuntu0~16.04.13+esm2 python3.5-minimal 3.5.2-2ubuntu0~16.04.13+esm2 Ubuntu 14.04 ESM: python3.4 3.4.3-1ubuntu1~14.04.7+esm12 python3.4-minimal 3.4.3-1ubuntu1~14.04.7+esm12 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-5342-1

CVE-2021-3426, CVE-2021-4189, CVE-2022-0391

Severity
Ubuntu Security Notice USN-5342-1

Package Information

https://launchpad.net/ubuntu/+source/python3.8/3.8.10-0ubuntu1~20.04.4 https://launchpad.net/ubuntu/+source/python2.7/2.7.17-1~18.04ubuntu1.7 https://launchpad.net/ubuntu/+source/python3.6/3.6.9-1~18.04ubuntu1.7

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