• libx11 vulnerabilities

    From bugz_ubuntu@21:4/110 to Ubuntu Users on Wed Sep 2 16:10:06 2020
    libx11 vulnerabilities

    A security issue affects these releases of Ubuntu and its
    derivatives:

    * Ubuntu 20.04 LTS
    * Ubuntu 18.04 LTS
    * Ubuntu 16.04 LTS

    Summary

    Several security issues were fixed in libx11.

    Software Description

    * libx11 - None

    Details

    Todd Carson discovered that libx11 incorrectly handled certain
    memory operations. A local attacker could possibly use this issue
    to escalate privileges. (CVE-2020-14344)

    Jayden Rivers discovered that libx11 incorrectly handled locales.
    A local attacker could possibly use this issue to escalate
    privileges. (CVE-2020-14363)

    Update instructions

    The problem can be corrected by updating your system to the
    following package versions:

    Ubuntu 20.04 LTS
    libx11-6 - 2:1.6.9-2ubuntu1.1

    Ubuntu 18.04 LTS
    libx11-6 - 2:1.6.4-3ubuntu0.3

    Ubuntu 16.04 LTS
    libx11-6 - 2:1.6.3-1ubuntu2.2

    To update your system, please follow these instructions:
    https://wiki.ubuntu.com/Security/Upgrades.

    After a standard system update you need to reboot your computer to
    make all the necessary changes.

    References

    * CVE-2020-14344
    * CVE-2020-14363

    --- Mystic BBS v1.12 A46 (Linux/64)
    * Origin: BZ&BZ BBS (21:4/110)
  • From bugz_ubuntu@21:4/110 to Ubuntu Users on Tue Sep 8 20:10:04 2020
    libx11 vulnerabilities

    A security issue affects these releases of Ubuntu and its
    derivatives:

    * Ubuntu 14.04 ESM
    * Ubuntu 12.04 ESM

    Summary

    Several security issues were fixed in libx11.

    Software Description

    * libx11 - None

    Details

    USN-4487-1 fixed several vulnerabilities in libx11. This update
    provides the corresponding update for Ubuntu 12.04 ESM and 14.04
    ESM.

    Original advisory details:

    Todd Carson discovered that libx11 incorrectly handled certain
    memory operations. A local attacker could possibly use this issue
    to escalate privileges. (CVE-2020-14344)

    Jayden Rivers discovered that libx11 incorrectly handled locales.
    A local attacker could possibly use this issue to escalate
    privileges. (CVE-2020-14363)

    Update instructions

    The problem can be corrected by updating your system to the
    following package versions:

    Ubuntu 14.04 ESM
    libx11-6 - 2:1.6.2-1ubuntu2.1+esm1

    Ubuntu 12.04 ESM
    libx11-6 - 2:1.4.99.1-0ubuntu2.5

    To update your system, please follow these instructions:
    https://wiki.ubuntu.com/Security/Upgrades.

    After a standard system update you need to reboot your computer to
    make all the necessary changes.

    References

    * USN-4487-1
    * CVE-2020-14344
    * CVE-2020-14363

    --- Mystic BBS v1.12 A45 (Linux/64)
    * Origin: BZ&BZ BBS (21:4/110)