SECURITY

USN-3610-1: ICU vulnerability icu vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary ICU could be made to crash if it received specially crafted input. Software Description icu – International Components for Unicode library Details It was discovered that ICU incorrectly handled certain calendars. If an application using ICU processed crafted data, a remote attacker could possibly cause it to crash, leading to a denial of service. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10 libicu57 – 57.1-6ubuntu0.3 Ubuntu 16.04 LTS libicu55 – 55.1-7ubuntu0.4 Ubuntu 14.04 LTS libicu52 – 52.1-3ubuntu0.8 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. In general, a standard system update will make all the necessary changes. References CVE-2017-15422 Source: USN-3610-1: ICU vulnerability

USN-3609-1: Firefox vulnerability firefox vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary Firefox could be made to crash or run programs as your login if it opened a malicious website. Software Description firefox – Mozilla Open Source web browser Details A use-after-free was discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service or execute arbitrary code. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10 firefox – 59.0.2+build1-0ubuntu0.17.10.1 Ubuntu 16.04 LTS firefox – 59.0.2+build1-0ubuntu0.16.04.1 Ubuntu 14.04 LTS firefox – 59.0.2+build1-0ubuntu0.14.04.1 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. After a standard system update you need to restart Firefox to [ more… ]

USN-3608-1: Zsh vulnerabilities zsh 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 Zsh. Software Description zsh – shell with lots of features Details Richard Maciel Costa discovered that Zsh incorrectly handled certain inputs. An attacker could possibly use this to cause a denial of service. (CVE-2018-1071) It was discovered that Zsh incorrectly handled certain files. An attacker could possibly use this to execute arbitrary code. (CVE-2018-1083) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10 zsh – 5.2-5ubuntu1.2 Ubuntu 16.04 LTS zsh – 5.1.1-1ubuntu2.2 Ubuntu 14.04 LTS zsh – 5.0.2-3ubuntu6.2 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. After a standard system update you need to restart Zsh to make all [ more… ]