SECURITY

USN-4171-4: Apport regression apport regression A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 14.04 ESM Summary USN-4171-2 introduced a regression in Apport. Software Description apport – automatically generate crash reports for debugging Details USN-4171-2 fixed a vulnerability in Apport. The update caused a regression in the Python Apport library. This update fixes the problem for Ubuntu 14.04 ESM. We apologize for the inconvenience. Original advisory details: Kevin Backhouse discovered Apport would read its user-controlled settings file as the root user. This could be used by a local attacker to possibly crash Apport or have other unspecified consequences. (CVE-2019-11481) Sander Bos discovered a race-condition in Apport during core dump creation. This could be used by a local attacker to generate a crash report for a privileged process that is readable by an unprivileged user. (CVE-2019-11482) Sander Bos [ more… ]

USN-4175-1: Nokogiri vulnerability ruby-nokogiri vulnerability 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 Nokogiri could be made to execute programs if it received specially crafted input. Software Description ruby-nokogiri – HTML, XML, SAX, and Reader parser for Ruby Details It was discovered that Nokogiri incorrectly handled inputs. A remote attacker could possibly use this issue to execute arbitrary OS commands. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10 ruby-nokogiri – 1.10.3+dfsg1-2ubuntu0.1 Ubuntu 19.04 ruby-nokogiri – 1.10.0+dfsg1-2ubuntu0.1 Ubuntu 18.04 LTS ruby-nokogiri – 1.8.2-1ubuntu0.1 Ubuntu 16.04 LTS ruby-nokogiri – 1.6.7.2-3ubuntu0.1 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-2019-5477 Source: USN-4175-1: Nokogiri vulnerability

USN-4174-1: HAproxy vulnerability haproxy vulnerability 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 HAproxy would allow unintended access if ii received specially crafted HTTP request. Software Description haproxy – fast and reliable load balancing reverse proxy Details It was discovered that HAproxy incorrectly handled certain HTTP requests. An attacker could possibly use this issue to a privilege escalation (Request Smuggling). Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10 haproxy – 2.0.5-1ubuntu0.2 Ubuntu 19.04 haproxy – 1.8.19-1ubuntu1.2 Ubuntu 18.04 LTS haproxy – 1.8.8-1ubuntu0.7 Ubuntu 16.04 LTS haproxy – 1.6.3-1ubuntu0.3 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-2019-18277 Source: USN-4174-1: HAproxy vulnerability

USN-4171-3: Apport regression apport regression 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 USN-4171-1 introduced a regression in Apport. Software Description apport – automatically generate crash reports for debugging Details USN-4171-1 fixed vulnerabilities in Apport. The update caused a regression in the Python Apport library. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Kevin Backhouse discovered Apport would read its user-controlled settings file as the root user. This could be used by a local attacker to possibly crash Apport or have other unspecified consequences. (CVE-2019-11481) Sander Bos discovered a race-condition in Apport during core dump creation. This could be used by a local attacker to generate a crash report for a privileged process that is readable by an unprivileged user. (CVE-2019-11482) [ more… ]

USN-4170-3: Whoopsie regression whoopsie regression 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 USN-4170-2 caused a regression in Whoopsie Software Description whoopsie – Ubuntu error tracker submission Details USN-4170-1 fixed a vulnerability in Whoopsie and USN-4170-2 fixed a subsequent regression. That update was incomplete and could still result in Whoopsie potentially crashing when uploading crash reports on some architectures. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Kevin Backhouse discovered Whoopsie incorrectly handled very large crash reports. A local attacker could possibly use this issue to cause a denial of service, expose sensitive information or execute code as the whoopsie user. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10 libwhoopsie0 – [ more… ]