Ubuntu 4371-1: libvirt vulnerabilities

    Date21 May 2020
    35
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in libvirt.
    ==========================================================================
    Ubuntu Security Notice USN-4371-1
    May 21, 2020
    
    libvirt vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.10
    - Ubuntu 18.04 LTS
    
    Summary:
    
    Several security issues were fixed in libvirt.
    
    Software Description:
    - libvirt: Libvirt virtualization toolkit
    
    Details:
    
    It was discovered that libvirt incorrectly handled an active pool without a
    target path. A remote attacker could possibly use this issue to cause
    libvirt to crash, resulting in a denial of service. (CVE-2020-10703)
    
    It was discovered that libvirt incorrectly handled memory when retrieving
    certain domain statistics. A remote attacker could possibly use this issue
    to cause libvirt to consume resources, resulting in a denial of service.
    This issue only affected Ubuntu 19.10. (CVE-2020-12430)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.10:
      libvirt-clients                 5.4.0-0ubuntu5.4
      libvirt-daemon                  5.4.0-0ubuntu5.4
      libvirt0                        5.4.0-0ubuntu5.4
    
    Ubuntu 18.04 LTS:
      libvirt-clients                 4.0.0-1ubuntu8.17
      libvirt-daemon                  4.0.0-1ubuntu8.17
      libvirt0                        4.0.0-1ubuntu8.17
    
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4371-1
      CVE-2020-10703, CVE-2020-12430
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libvirt/5.4.0-0ubuntu5.4
      https://launchpad.net/ubuntu/+source/libvirt/4.0.0-1ubuntu8.17
    
    

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