[월:] 2017년 11월

USN-3499-1: Exim vulnerability Ubuntu Security Notice USN-3499-1 29th November, 2017 exim4 vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 17.04 Summary Exim could be made to crash if it received specially crafted network traffic. Software description exim4 – Exim is a mail transport agent Details It was discovered that Exim incorrectly handled certain BDAT data headers.A remote attacker could possibly use this issue to cause Exim to crash,resulting in a denial of service. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.10: exim4-daemon-heavy 4.89-5ubuntu1.2 exim4-daemon-light 4.89-5ubuntu1.2 Ubuntu 17.04: exim4-daemon-heavy 4.88-5ubuntu1.3 exim4-daemon-light 4.88-5ubuntu1.3 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-2017-16944 Source: USN-3499-1: Exim vulnerability

USN-3500-1: libXfont vulnerability Ubuntu Security Notice USN-3500-1 29th November, 2017 libxfont, libxfont1, libxfont2 vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 17.04 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary libXfont could be made to access arbitrary files, including special device files. Software description libxfont – X11 font rasterisation library libxfont1 – X11 font rasterisation library libxfont2 – X11 font rasterisation library Details It was discovered that libXfont incorrectly followed symlinks when openingfont files. A local unprivileged user could use this issue to cause the Xserver to access arbitrary files, including special device files. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.10: libxfont1 1:1.5.2-4ubuntu1.1 libxfont2 1:2.0.1-3ubuntu1.1 Ubuntu 17.04: libxfont1 1:1.5.2-4ubuntu0.2 libxfont2 1:2.0.1-3ubuntu0.2 Ubuntu 16.04 LTS: libxfont1 1:1.5.1-1ubuntu0.16.04.4 libxfont2 1:2.0.1-3~ubuntu16.04.3 Ubuntu 14.04 LTS: libxfont1 1:1.4.7-1ubuntu0.4 [ more… ]

USN-3501-1: libxcursor vulnerability Ubuntu Security Notice USN-3501-1 29th November, 2017 libxcursor vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 17.04 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary libxcursor could be made to crash or run programs if it opened a specially crafted file. Software description libxcursor – X11 cursor management library Details It was discovered that libxcursor incorrectly handled certain files. Anattacker could use these issues to cause libxcursor to crash, resulting ina denial of service, or possibly execute arbitrary code. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.10: libxcursor1 1:1.1.14-3ubuntu0.1 Ubuntu 17.04: libxcursor1 1:1.1.14-1ubuntu0.17.04.1 Ubuntu 16.04 LTS: libxcursor1 1:1.1.14-1ubuntu0.16.04.1 Ubuntu 14.04 LTS: libxcursor1 1:1.1.14-1ubuntu0.14.04.1 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. After a standard system update you need to reboot [ more… ]