Linux Security
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    Ubuntu 4365-1: Bind vulnerabilities

    Date 19 May 2020
    Posted By LinuxSecurity Advisories
    Several security issues were fixed in Bind.
    Ubuntu Security Notice USN-4365-1
    May 19, 2020
    bind9 vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 20.04 LTS
    - Ubuntu 19.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    Several security issues were fixed in Bind.
    Software Description:
    - bind9: Internet Domain Name Server
    Lior Shafir, Yehuda Afek, and Anat Bremler-Barr discovered that Bind
    incorrectly limited certain fetches. A remote attacker could possibly use
    this issue to cause Bind to consume resources, leading to a denial of
    service, or possibly use Bind to perform a reflection attack.
    Tobias Klein discovered that Bind incorrectly handled checking TSIG
    validity. A remote attacker could use this issue to cause Bind to crash,
    resulting in a denial of service, or possibly perform other attacks.
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 20.04 LTS:
      bind9                           1:9.16.1-0ubuntu2.1
    Ubuntu 19.10:
      bind9                           1:9.11.5.P4+dfsg-5.1ubuntu2.2
    Ubuntu 18.04 LTS:
      bind9                           1:9.11.3+dfsg-1ubuntu1.12
    Ubuntu 16.04 LTS:
      bind9                           1:9.10.3.dfsg.P4-8ubuntu1.16
    In general, a standard system update will make all the necessary changes.
      CVE-2020-8616, CVE-2020-8617
    Package Information:


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