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Ubuntu 19.10: 4196-1 Moderate: Python-Ecdsa Denial Of Service

Several security issues were fixed in python-ecdsa.. =========================================================================Ubuntu Security Notice USN-4196-1 November 18, 2019 python-ecdsa vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 19.10 - Ubuntu 19.04 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: Several security issues were fixed in python-ecdsa. Software Description: - python-ecdsa: ECDSA cryptographic signature library Details: It was discovered that python-ecdsa incorrectly handled certain signatures. A remote attacker could possibly use this issue to cause python-ecdsa to generate unexpected exceptions, resulting in a denial of service. (CVE-2019-14853) It was discovered that python-ecdsa incorrectly verified DER encoding in signatures. A remote attacker could use this issue to perform certain malleability attacks. (CVE-2019-14859) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10: python-ecdsa 0.13.2-2ubuntu0.1 python3-ecdsa 0.13.2-2ubuntu0.1 Ubuntu 19.04: python-ecdsa 0.13-3ubuntu0.1 python3-ecdsa 0.13-3ubuntu0.1 Ubuntu 18.04 LTS: python-ecdsa 0.13-2ubuntu0.18.04.1 python3-ecdsa 0.13-2ubuntu0.18.04.1 Ubuntu 16.04 LTS: python-ecdsa 0.13-2ubuntu0.16.04.1 python3-ecdsa 0.13-2ubuntu0.16.04.1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-4196-1 CVE-2019-14853, CVE-2019-14859 Package Information: https://launchpad.net/ubuntu/+source/python-ecdsa/0.13.2-2ubuntu0.1 https://launchpad.net/ubuntu/+source/python-ecdsa/0.13-3ubuntu0.1 https://launchpad.net/ubuntu/+source/python-ecdsa/0.13-2ubuntu0.18.04.1 https://launchpad.net/ubuntu/+source/python-ecdsa/0.13-2ubuntu0.16.04.1 . Multiple security flaws addressed in python-ecdsa for various Ubuntu versions. Discover the details on enhancements and potential risks.. PythonEcdsa, UbuntuSecurity, SoftwareUpdate, RemoteAttack, CyberThreats. . Severity: Important. LinuxSecurity.com Team

Nov 18, 2019 •Important Ubuntu