Ubuntu 4202-2: Thunderbird regression

    Date 10 Dec 2019
    Posted By LinuxSecurity Advisories
    USN-4202-1 caused a regression in Thunderbird.
    Ubuntu Security Notice USN-4202-2
    December 10, 2019
    thunderbird regression
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 19.10
    - Ubuntu 18.04 LTS
    USN-4202-1 caused a regression in Thunderbird.
    Software Description:
    - thunderbird: Mozilla Open Source mail and newsgroup client
    USN-4202-1 fixed vulnerabilities in Thunderbird. After upgrading,
    created a new profile for some users. This update fixes the problem.
    We apologize for the inconvenience.
    Original advisory details:
     It was discovered that a specially crafted S/MIME message with an inner
     encryption layer could be displayed as having a valid signature in some
     circumstances, even if the signer had no access to the encrypted message.
     An attacker could potentially exploit this to spoof the message author.
      Multiple security issues were discovered in Thunderbird. If a user were
     tricked in to opening a specially crafted website in a browsing context,
     an attacker could potentially exploit these to cause a denial of service,
     bypass security restrictions, bypass same-origin restrictions, conduct
     cross-site scripting (XSS) attacks, or execute arbitrary code.
     (CVE-2019-11757, CVE-2019-11758, CVE-2019-11759, CVE-2019-11760,
     CVE-2019-11761, CVE-2019-11762, CVE-2019-11763, CVE-2019-11764)
      A heap overflow was discovered in the expat library in Thunderbird. If a
     user were tricked in to opening a specially crafted message, an attacker
     could potentially exploit this to cause a denial of service, or execute
     arbitrary code. (CVE-2019-15903)
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 19.10:
      thunderbird                     1:68.2.2+build1-0ubuntu0.19.10.1
    Ubuntu 18.04 LTS:
      thunderbird                     1:68.2.2+build1-0ubuntu0.18.04.1
    After a standard system update you need to restart Thunderbird to make
    all the necessary changes.
    Package Information:

    LinuxSecurity Poll

    Have you ever used tcpdump for network troubleshooting or debugging?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 2 answer(s).
    [{"id":"125","title":"Yes","votes":"36","type":"x","order":"1","pct":80,"resources":[]},{"id":"126","title":"No ","votes":"9","type":"x","order":"2","pct":20,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350


    bottom 200

    Please enable / Bitte aktiviere JavaScript!
    Veuillez activer / Por favor activa el Javascript![ ? ]

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.