Ubuntu alert USN-7015-7 (python2.7)
| From: | noreply+usn-bot@canonical.com | |
| To: | ubuntu-security-announce@lists.ubuntu.com | |
| Subject: | [USN-7015-7] Python 2.7 regression | |
| Date: | Mon, 29 Sep 2025 13:08:53 +0000 | |
| Message-ID: | <E1v3Dcb-0004Ei-Ph@lists.ubuntu.com> |
========================================================================== Ubuntu Security Notice USN-7015-7 September 29, 2025 python2.7 regression ========================================================================== 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-2024-6232) It was discovered that the Python email module incorrectly quoted newlines for email headers. A remote attacker could possibly use this issue to perform header injection. (CVE-2024-6923) It was discovered that the Python http.cookies module incorrectly handled parsing cookies that contained backslashes for quoted characters. A remote attacker could possibly use this issue to cause Python to consume resources, leading to a denial of service. (CVE-2024-7592) It was discovered that the Python zipfile module incorrectly handled certain malformed zip files. A remote attacker could possibly use this issue to cause Python to stop responding, resulting in a denial of service. (CVE-2024-8088) 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://launchpad.net/bugs/2125702
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