USN-3353-2: Samba vulnerability

Discussion in 'Security' started by Ubuntu Security Notices, Jul 15, 2017.

  1. Ubuntu Security Notice USN-3353-2


    14th July, 2017

    samba 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


    Samba could allow unintended access to network services.

    Software description

    • samba - SMB/CIFS file, print, and login server for Unix
    Details


    USN-3353-1 fixed a vulnerability in Heimdal. This update provides
    the corresponding update for Samba.

    Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered
    that Samba clients incorrectly trusted unauthenticated portions of
    Kerberos tickets. A remote attacker could use this to impersonate
    trusted network servers or perform other attacks.

    Update instructions


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

    Ubuntu 17.04:
    samba-libs 2:4.5.8+dfsg-0ubuntu0.17.04.4
    Ubuntu 16.10:
    samba-libs 2:4.4.5+dfsg-2ubuntu5.8
    Ubuntu 16.04 LTS:
    samba-libs 2:4.3.11+dfsg-0ubuntu0.16.04.9
    Ubuntu 14.04 LTS:
    samba-libs 2:4.3.11+dfsg-0ubuntu0.14.04.10

    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-2017-11103

    Continue reading...
     

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