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Ubuntu: USN-3808-1 Critical: Ruby Certificate Bypass and Code Issue

Several security issues were fixed in Ruby.. =========================================================================Ubuntu Security Notice USN-3808-1 November 05, 2018 ruby1.9.1, ruby2.0, ruby2.3, ruby2.5 vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Ruby. Software Description: - ruby2.5: Interpreter of object-oriented scripting language Ruby - ruby2.3: Object-oriented scripting language - ruby1.9.1: Object-oriented scripting language - ruby2.0: Object-oriented scripting language Details: It was discovered that Ruby incorrectly handled certain X.509 certificates. An attacker could possibly use this issue to bypass the certificate check. (CVE-2018-16395) It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. (CVE-2018-16396) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10: libruby2.5 2.5.1-5ubuntu4.1 ruby2.5 2.5.1-5ubuntu4.1 Ubuntu 18.04 LTS: libruby2.5 2.5.1-1ubuntu1.1 ruby2.5 2.5.1-1ubuntu1.1 Ubuntu 16.04 LTS: libruby2.3 2.3.1-2~16.04.11 ruby2.3 2.3.1-2~16.04.11 Ubuntu 14.04 LTS: libruby1.9.1 1.9.3.484-2ubuntu1.13 libruby2.0 2.0.0.484-1ubuntu2.11 ruby1.9.1 1.9.3.484-2ubuntu1.13 ruby1.9.3 1.9.3.484-2ubuntu1.13 ruby2.0 2.0.0.484-1ubuntu2.11 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-3808-1 CVE-2018-16395, CVE-2018-16396 Package Information: https://launchpad.net/ubuntu/+source/ruby2.5/2.5.1-5ubuntu4.1 https://launchpad.net/ubuntu/+source/ruby2.5/2.5.1-1ubuntu1.1 https://launchpad.net/ubuntu/+source/ruby2.3/2.3.1-2~16.04.11 https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.484-2ubuntu1.13 https://launchpad.net/ubuntu/+source/ruby2.0/2.0.0.484-1ubuntu2.11 . Multiple vulnerabilities detected in Python running on Debian demand prompt action for patches to avert potential threats.. Ruby Security Issues, Ubuntu Ruby Update, Ruby Fix. . Severity: Critical. LinuxSecurity.com Team

Nov 05, 2018 •Critical Ubuntu