Stay Secure with the Latest Linux Advisories

security advisorysoftware updateremote attack

Ubuntu 18.04 LTS: USN-4581-1 Critical: Python CRLF Injection

Python could be used to perform a CRLF injection if it received a specially crafted request.. =========================================================================Ubuntu Security Notice USN-4581-1 October 14, 2020 python2.7, python3.4, python3.5, python3.6 vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 ESM - Ubuntu 12.04 ESM Summary: Python could be used to perform a CRLF injection if it received a specially crafted request. Software Description: - 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: It was discovered that Python incorrectly handled certain character sequences. A remote attacker could possibly use this issue to perform CRLF injection. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: python2.7 2.7.17-1~18.04ubuntu1.2 python2.7-minimal 2.7.17-1~18.04ubuntu1.2 python3.6 3.6.9-1~18.04ubuntu1.3 python3.6-minimal 3.6.9-1~18.04ubuntu1.3 Ubuntu 16.04 LTS: python2.7 2.7.12-1ubuntu0~16.04.13 python2.7-minimal 2.7.12-1ubuntu0~16.04.13 python3.5 3.5.2-2ubuntu0~16.04.12 python3.5-minimal 3.5.2-2ubuntu0~16.04.12 Ubuntu 14.04 ESM: python2.7 2.7.6-8ubuntu0.6+esm7 python2.7-minimal 2.7.6-8ubuntu0.6+esm7 python3.4 3.4.3-1ubuntu1~14.04.7+esm8 python3.4-minimal 3.4.3-1ubuntu1~14.04.7+esm8 Ubuntu 12.04 ESM: python2.7 2.7.3-0ubuntu3.19 python2.7-minimal 2.7.3-0ubuntu3.19 Ingeneral, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-4581-1 CVE-2020-26116 Package Information: https://launchpad.net/ubuntu/+source/python2.7/2.7.17-1~18.04ubuntu1.2 https://launchpad.net/ubuntu/+source/python3.6/3.6.9-1~18.04ubuntu1.3 https://launchpad.net/ubuntu/+source/python2.7/2.7.12-1ubuntu0~16.04.13 https://launchpad.net/ubuntu/+source/python3.5/3.5.2-2ubuntu0~16.04.12 . A recent Ubuntu Security Bulletin USN-4581-1 highlights a vulnerability related to Python, affecting various builds. Guidance for remediation is provided.. Python Security Flaw, Ubuntu Update, Injection Vulnerability, Security Notice, Software Patch. . LinuxSecurity.com Team

Oct 14, 2020 Ubuntu