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Ubuntu 14.04 ESM: USN-4127-2 Moderate: Python Multiple Issues

Several security issues were fixed in Python.. =========================================================================Ubuntu Security Notice USN-4127-2 September 10, 2019 python2.7, python3.4 vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 ESM - Ubuntu 12.04 ESM Summary: Several security issues were fixed in Python. Software Description: - python2.7: An interactive high-level object-oriented language - python3.4: An interactive high-level object-oriented language Details: USN-4127-1 fixed several vulnerabilities in Python. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: It was discovered that Python incorrectly handled certain pickle files. An attacker could possibly use this issue to consume memory, leading to a denial of service. This issue only affected Ubuntu 14.04 ESM. (CVE-2018-20406) It was discovered that Python incorrectly validated the domain when handling cookies. An attacker could possibly trick Python into sending cookies to the wrong domain. (CVE-2018-20852) Jonathan Birch and Panayiotis Panayiotou discovered that Python incorrectly handled Unicode encoding during NFKC normalization. An attacker could possibly use this issue to obtain sensitive information. (CVE-2019-9636, CVE-2019-10160) Colin Read and Nicolas Edet discovered that Python incorrectly handled parsing certain X509 certificates. An attacker could possibly use this issue to cause Python to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 ESM. (CVE-2019-5010) It was discovered that Python incorrectly handled certain urls. A remote attacker could possibly use this issue to perform CRLF injection attacks. (CVE-2019-9740, CVE-2019-9947) Sihoon Lee discovered that Python incorrectly handled the local_file: scheme. A remote attacker could possibly use this issue to bypass blacklist meschanisms. (CVE-2019-9948) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 ESM: python2.7 2.7.6-8ubuntu0.6+esm2 python2.7-minimal 2.7.6-8ubuntu0.6+esm2 python3.4 3.4.3-1ubuntu1~14.04.7+esm2 python3.4-minimal 3.4.3-1ubuntu1~14.04.7+esm2 Ubuntu 12.04 ESM: python2.7 2.7.3-0ubuntu3.14 python2.7-minimal 2.7.3-0ubuntu3.14 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-4127-2 https://ubuntu.com/security/notices/USN-4127-1 CVE-2018-20406, CVE-2018-20852, CVE-2019-10160, CVE-2019-5010, CVE-2019-9636, CVE-2019-9740, CVE-2019-9947, CVE-2019-9948 . Numerous vulnerabilities have been fixed for Python on Ubuntu, affecting various Extended Security Maintenance (ESM) versions. It's essential to review the key patches and improvements made. Python Security, Ubuntu ESM, DoS Mitigation, Cookie Management Issues. . LinuxSecurity.com Team

Sep 10, 2019 Ubuntu