Ubuntu 4275-1: Qt vulnerabilities

    Date10 Feb 2020
    312
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in Qt.
    ==========================================================================
    Ubuntu Security Notice USN-4275-1
    February 10, 2020
    
    qtbase-opensource-src vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in Qt.
    
    Software Description:
    - qtbase-opensource-src: Qt 5 libraries
    
    Details:
    
    It was discovered that Qt incorrectly handled certain PPM images. If a user
    or automated system were tricked into opening a specially crafted PPM file,
    a remote attacker could cause Qt to crash, resulting in a denial of
    service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
    (CVE-2018-19872)
    
    It was discovered that Qt incorrectly handled certain text files. If a user
    or automated system were tricked into opening a specially crafted text
    file, a remote attacker could cause Qt to crash, resulting in a denial of
    service. This issue only affected Ubuntu 19.10. (CVE-2019-18281)
    
    It was discovered that Qt incorrectly searched for plugins in the current
    working directory. An attacker could possibly use this issue to execute
    arbitrary code. (CVE-2020-0569)
    
    It was discovered that Qt incorrectly searched for libraries relative to
    the current working directory. An attacker could possibly use this issue to
    execute arbitrary code. This issue only affected Ubuntu 19.10.
    (CVE-2020-0570)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.10:
      libqt5core5a                    5.12.4+dfsg-4ubuntu1.1
      libqt5gui5                      5.12.4+dfsg-4ubuntu1.1
    
    Ubuntu 18.04 LTS:
      libqt5core5a                    5.9.5+dfsg-0ubuntu2.5
      libqt5gui5                      5.9.5+dfsg-0ubuntu2.5
    
    Ubuntu 16.04 LTS:
      libqt5core5a                    5.5.1+dfsg-16ubuntu7.7
      libqt5gui5                      5.5.1+dfsg-16ubuntu7.7
    
    After a standard system update you need to restart your session to make
    all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4275-1
      CVE-2018-19872, CVE-2019-18281, CVE-2020-0569, CVE-2020-0570
    
    Package Information:
      https://launchpad.net/ubuntu/+source/qtbase-opensource-src/5.12.4+dfsg-4ubuntu1.1
      https://launchpad.net/ubuntu/+source/qtbase-opensource-src/5.9.5+dfsg-0ubuntu2.5
      https://launchpad.net/ubuntu/+source/qtbase-opensource-src/5.5.1+dfsg-16ubuntu7.7
    
    
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