Ubuntu 3318-1: GnuTLS vulnerabilities

    Date13 Jun 2017
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in GnuTLS.
    Ubuntu Security Notice USN-3318-1
    June 13, 2017
    gnutls26, gnutls28 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
    Several security issues were fixed in GnuTLS.
    Software Description:
    - gnutls28: GNU TLS library
    - gnutls26: GNU TLS library
    Hubert Kario discovered that GnuTLS incorrectly handled decoding a status
    response TLS extension. A remote attacker could possibly use this issue to
    cause GnuTLS to crash, resulting in a denial of service. This issue only
    applied to Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. (CVE-2017-7507)
    It was discovered that GnuTLS incorrectly handled decoding certain OpenPGP
    certificates. A remote attacker could use this issue to cause GnuTLS to
    crash, resulting in a denial of service, or possibly execute arbitrary
    code. (CVE-2017-7869)
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 17.04:
      libgnutls30                     3.5.6-4ubuntu4.1
    Ubuntu 16.10:
      libgnutls30                     3.5.3-5ubuntu1.2
    Ubuntu 16.04 LTS:
      libgnutls30                     3.4.10-4ubuntu1.3
    Ubuntu 14.04 LTS:
      libgnutls26                     2.12.23-12ubuntu2.8
    In general, a standard system update will make all the necessary changes.
      CVE-2017-7507, CVE-2017-7869
    Package Information:
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