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Ubuntu 18.04 LTS Python2.7 Important Regression Fix USN-7015-7

ubuntu
Calendar Grey September 29, 2025
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-7015-7 addressing critical regression issues in python2.7 for Ubuntu 16.04 and 18.04 LTS.
USN-7015-4 introduced a regression in Python 2.7

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: USN-7015-4 introduced a regression in Python 2.7 Software Description: - python2.7: An interactive high-level object-oriented language Details: USN-7015-4 fixed vulnerabilities in Python. It was discovered that the fix for CVE-2023-27043 for python2.7 was incorrectly applied on Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that the Python email module incorrectly parsed email addresses that contain special characters. A remote attacker could possibly use this issue to bypass certain protection mechanisms. (CVE-2023-27043) It was discovered that Python allowed excessive backtracking while parsing certain tarfile headers. A remote attacker could possibly use this issue to cause Python to consume resources, leading to a denial of service. (CVE-2024...

Read the Full Advisory

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS libpython2.7 2.7.17-1~18.04ubuntu1.13+esm13 Available with Ubuntu Pro python2.7 2.7.17-1~18.04ubuntu1.13+esm13 Available with Ubuntu Pro Ubuntu 16.04 LTS libpython2.7 2.7.12-1ubuntu0~16.04.18+esm18 Available with Ubuntu Pro python2.7 2.7.12-1ubuntu0~16.04.18+esm18 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7015-7

https://ubuntu.com/security/notices/USN-7015-6

https://ubuntu.com/security/notices/USN-7015-5

https://ubuntu.com/security/notices/USN-7015-4

https://ubuntu.com/security/notices/USN-7015-3

https://ubuntu.com/security/notices/USN-7015-2

https://ubuntu.com/security/notices/USN-7015-1

CVE-2023-27043, https://bugs.launchpad.net/ubuntu/+source/python2.7/+bug/2125702

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Ubuntu Security Notice USN-7015-7

Package Information

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