Ubuntu 3927-1: Thunderbird vulnerabilities

    Date28 Mar 2019
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in Thunderbird.
    Ubuntu Security Notice USN-3927-1
    March 28, 2019
    thunderbird vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 18.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    Several security issues were fixed in Thunderbird.
    Software Description:
    - thunderbird: Mozilla Open Source mail and newsgroup client
    It was discovered that Thunderbird allowed PAC files to specify that
    requests to localhost are sent through the proxy to another server. If
    proxy auto-detection is enabled, an attacker could potentially exploit
    this to conduct attacks on local services and tools. (CVE-2018-18506)
    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,
    or execute arbitrary code. (CVE-2019-9788, CVE-2019-9790, CVE-2019-9791,
    CVE-2019-9792, CVE-2019-9795, CVE-2019-9796, CVE-2019-9810, CVE-2019-9813)
    A mechanism was discovered that removes some bounds checking for string,
    array, or typed array accesses if Spectre mitigations have been disabled.
    If a user were tricked in to opening a specially crafted website in a
    browsing context with Spectre mitigations disabled, an attacker could
    potentially exploit this to cause a denial of service, or execute
    arbitrary code. (CVE-2019-9793)
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 18.10:
      thunderbird                     1:60.6.1+build2-0ubuntu0.18.10.1
    Ubuntu 18.04 LTS:
      thunderbird                     1:60.6.1+build2-0ubuntu0.18.04.1
    Ubuntu 16.04 LTS:
      thunderbird                     1:60.6.1+build2-0ubuntu0.16.04.1
    Ubuntu 14.04 LTS:
      thunderbird                     1:60.6.1+build2-0ubuntu0.14.04.1
    After a standard system update you need to restart Thunderbird to make
    all the necessary changes.
      CVE-2018-18506, CVE-2019-9788, CVE-2019-9790, CVE-2019-9791,
      CVE-2019-9792, CVE-2019-9793, CVE-2019-9795, CVE-2019-9796,
      CVE-2019-9810, CVE-2019-9813
    Package Information:

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