SECURITY

USN-3855-1: systemd vulnerabilities systemd vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 18.10 Ubuntu 18.04 LTS Ubuntu 16.04 LTS Summary Several security issues were fixed in systemd. Software Description systemd – system and service manager Details It was discovered that systemd-journald allocated variable-length buffers for certain message fields on the stack. A local attacker could potentially exploit this to cause a denial of service, or execute arbitrary code. (CVE-2018-16864) It was discovered that systemd-journald allocated variable-length arrays of objects representing message fields on the stack. A local attacker could potentially exploit this to cause a denial of service, or execute arbitrary code. (CVE-2018-16865) An out-of-bounds read was discovered in systemd-journald. A local attacker could potentially exploit this to obtain sensitive information and bypass ASLR protections. (CVE-2018-16866) Update instructions The problem can be corrected by updating [ more… ]

USN-3854-1: WebKitGTK+ vulnerabilities webkit2gtk vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 18.10 Ubuntu 18.04 LTS Summary Several security issues were fixed in WebKitGTK+. Software Description webkit2gtk – Web content engine library for GTK+ Details A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10 libjavascriptcoregtk-4.0-18 – 2.22.5-0ubuntu0.18.10.1 libwebkit2gtk-4.0-37 – 2.22.5-0ubuntu0.18.10.1 Ubuntu 18.04 LTS libjavascriptcoregtk-4.0-18 – 2.22.5-0ubuntu0.18.04.1 libwebkit2gtk-4.0-37 – 2.22.5-0ubuntu0.18.04.1 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. This update uses a new upstream release, [ more… ]

USN-3853-1: GnuPG vulnerability gnupg2 vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 18.10 Ubuntu 18.04 LTS Summary GnuPG could allow unintended access to network services. Software Description gnupg2 – GNU privacy guard – a free PGP replacement Details Ben Fuhrmannek discovered that GnuPG incorrectly handled Web Key Directory lookups. A remote attacker could possibly use this issue to cause a denial of service, or perform Cross-Site Request Forgery attacks. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10 gnupg – 2.2.8-3ubuntu1.1 gpg-wks-client – 2.2.8-3ubuntu1.1 Ubuntu 18.04 LTS gnupg – 2.2.4-1ubuntu1.2 gpg-wks-client – 2.2.4-1ubuntu1.2 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-2018-1000858 Source: USN-3853-1: GnuPG vulnerability

USN-3852-1: Exiv2 vulnerabilities exiv2 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 Exiv2. Software Description exiv2 – EXIF/IPTC/XMP metadata manipulation tool Details It was discovered that Exiv2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. CVE-2017-9239 only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-11591, CVE-2017-11683, CVE-2017-14859, CVE-2017-14862, CVE-2017-14864, CVE-2017-17669, CVE-2017-9239, CVE-2018-16336, CVE-2018-1758) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10 exiv2 – 0.25-4ubuntu0.1 libexiv2-14 – 0.25-4ubuntu0.1 Ubuntu 18.04 LTS exiv2 – 0.25-3.1ubuntu0.18.04.2 libexiv2-14 – 0.25-3.1ubuntu0.18.04.2 Ubuntu 16.04 LTS exiv2 – 0.25-2.1ubuntu16.04.3 libexiv2-14 – 0.25-2.1ubuntu16.04.3 Ubuntu 14.04 LTS exiv2 – 0.23-1ubuntu2.2 libexiv2-12 – 0.23-1ubuntu2.2 To update your system, [ more… ]