Ubuntu 2727-1: GnuTLS vulnerabilities

    Date01 Sep 2015
    CategoryUbuntu
    35
    Posted ByLinuxSecurity Advisories
    GnuTLS could be made to crash or run programs if it processed a specially crafted certificate.
    ==========================================================================
    Ubuntu Security Notice USN-2727-1
    September 01, 2015
    
    gnutls28 vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 15.04
    
    Summary:
    
    GnuTLS could be made to crash or run programs if it processed a specially
    crafted certificate.
    
    Software Description:
    - gnutls28: GNU TLS library
    
    Details:
    
    It was discovered that GnuTLS incorrectly handled parsing CRL distribution
    points. A remote attacker could possibly use this issue to cause a denial
    of service, or execute arbitrary code. (CVE-2015-3308)
    
    Kurt Roeckx discovered that GnuTLS incorrectly handled a long
    DistinguishedName (DN) entry in a certificate. A remote attacker could
    possibly use this issue to cause a denial of service, or execute arbitrary
    code. (CVE-2015-6251)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 15.04:
      libgnutls-deb0-28               3.3.8-3ubuntu3.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2727-1
      CVE-2015-3308, CVE-2015-6251
    
    Package Information:
      https://launchpad.net/ubuntu/+source/gnutls28/3.3.8-3ubuntu3.1
    
    
    
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