========================================================================== Ubuntu Security Notice USN-3528-1 January 10, 2018 ruby1.9.1, ruby2.3 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 17.10 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Ruby. Software Description: - ruby2.3: Interpreter of object-oriented scripting language Ruby - ruby1.9.1: Interpreter of object-oriented scripting language Ruby Details: It was discovered that Ruby incorrectly handled certain terminal emulator escape sequences. An attacker could use this to execute arbitrary code via a crafted user name. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-10784) It was discovered that Ruby incorrectly handled certain strings. An attacker could use this to cause a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-14033) It was discovered that Ruby incorrectly handled some generating JSON. An attacker could use this to possible expose sensitive information. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-14064) It was discovered that Ruby incorrectly handled certain inputs. An attacker could use this to execute arbitrary code. (CVE-2017-17790) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10: libruby2.3 2.3.3-1ubuntu1.2 ruby2.3 2.3.3-1ubuntu1.2 Ubuntu 16.04 LTS: libruby2.3 2.3.1-2~16.04.5 ruby2.3 2.3.1-2~16.04.5 Ubuntu 14.04 LTS: libruby1.9.1 1.9.3.484-2ubuntu1.7 ruby1.9.1 1.9.3.484-2ubuntu1.7 ruby1.9.3 1.9.3.484-2ubuntu1.7 In general, a standard system update will make all the necessary changes. References: https://www.ubuntu.com/usn/usn-3528-1 CVE-2017-10784, CVE-2017-14033, CVE-2017-14064, CVE-2017-17790 Package Information: https://launchpad.net/ubuntu/+source/ruby2.3/2.3.3-1ubuntu1.2 https://launchpad.net/ubuntu/+source/ruby2.3/2.3.1-2~16.04.5 https://launchpad.net/ubuntu/+source/ruby1.9.1/1.9.3.484-2ubuntu1.7