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Ubuntu Security Update USN-3304-1: Sudo vulnerability

Discussion in 'Linux Security Announcements (Automated)' started by LinuxBot, May 30, 2017.

  1. LinuxBot

    LinuxBot Moderator
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    Ubuntu Security Notice USN-3304-1


    30th May, 2017

    sudo vulnerability


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

    • Ubuntu 17.04
    • Ubuntu 16.10
    • Ubuntu 16.04 LTS
    • Ubuntu 14.04 LTS
    Summary


    Sudo could be made to overwrite files as the administrator.

    Software description

    • sudo - Provide limited super user privileges to specific users
    Details


    It was discovered that Sudo did not properly parse the contents of
    /proc/[pid]/stat when attempting to determine its controlling tty.
    A local attacker in some configurations could possibly use this to
    overwrite any file on the filesystem, bypassing intended permissions.

    Update instructions


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

    Ubuntu 17.04:
    sudo-ldap 1.8.19p1-1ubuntu1.1
    sudo 1.8.19p1-1ubuntu1.1
    Ubuntu 16.10:
    sudo-ldap 1.8.16-0ubuntu3.2
    sudo 1.8.16-0ubuntu3.2
    Ubuntu 16.04 LTS:
    sudo-ldap 1.8.16-0ubuntu1.4
    sudo 1.8.16-0ubuntu1.4
    Ubuntu 14.04 LTS:
    sudo-ldap 1.8.9p5-1ubuntu1.4
    sudo 1.8.9p5-1ubuntu1.4

    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-2017-1000367

    Continue reading...
     

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