USN-3259-1: Bind vulnerabilities

Discussion in 'Security' started by Ubuntu Security Notices, Apr 18, 2017.

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  1. Ubuntu Security Notice USN-3259-1


    17th April, 2017

    bind9 vulnerabilities


    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
    • Ubuntu 12.04 LTS
    Summary


    Several security issues were fixed in Bind.

    Software description

    • bind9 - Internet Domain Name Server
    Details


    It was discovered that the resolver in Bind made incorrect
    assumptions about ordering when processing responses containing
    a CNAME or DNAME. An attacker could use this cause a denial of
    service. (CVE-2017-3137)

    Oleg Gorokhov discovered that in some situations, Bind did not properly
    handle DNS64 queries. An attacker could use this to cause a denial
    of service. (CVE-2017-3136)

    Mike Lalumiere discovered that in some situations, Bind did
    not properly handle invalid operations requested via its control
    channel. An attacker with access to the control channel could cause
    a denial of service. (CVE-2017-3138)

    Update instructions


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

    Ubuntu 17.04:
    bind9 1:9.10.3.dfsg.P4-10.1ubuntu5
    Ubuntu 16.10:
    bind9 1:9.10.3.dfsg.P4-10.1ubuntu1.6
    Ubuntu 16.04 LTS:
    bind9 1:9.10.3.dfsg.P4-8ubuntu1.6
    Ubuntu 14.04 LTS:
    bind9 1:9.9.5.dfsg-3ubuntu0.14
    Ubuntu 12.04 LTS:
    bind9 1:9.8.1.dfsg.P1-4ubuntu0.22

    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-2017-3136, CVE-2017-3137, CVE-2017-3138

    Continue reading...
     
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