Ubuntu 4323-1: Firefox vulnerabilities

    Date 07 Apr 2020
    261
    Posted By LinuxSecurity Advisories
    Firefox could be made to crash or run programs as your login if it opened a malicious website.
    ==========================================================================
    Ubuntu Security Notice USN-4323-1
    April 07, 2020
    
    firefox vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Firefox could be made to crash or run programs as your login if it
    opened a malicious website.
    
    Software Description:
    - firefox: Mozilla Open Source web browser
    
    Details:
    
    Multiple security issues were discovered in Firefox. If a user were
    tricked in to opening a specially crafted website, an attacker could
    potentially exploit these to cause a denial of service, obtain sensitive
    information, or execute arbitrary code. (CVE-2020-6821, CVE-2020-6822,
    CVE-2020-6824, CVE-2020-6825, CVE-2020-6826)
    
    It was discovered that extensions could obtain auth codes from OAuth login
    flows in some circumstances. If a user were tricked in to installing a
    specially crafted extension, an attacker could potentially exploit this to
    obtain access to the user's account. (CVE-2020-6823)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.10:
      firefox                         75.0+build3-0ubuntu0.19.10.1
    
    Ubuntu 18.04 LTS:
      firefox                         75.0+build3-0ubuntu0.18.04.1
    
    Ubuntu 16.04 LTS:
      firefox                         75.0+build3-0ubuntu0.16.04.1
    
    After a standard system update you need to restart Firefox to make
    all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4323-1
      CVE-2020-6821, CVE-2020-6822, CVE-2020-6823, CVE-2020-6824,
      CVE-2020-6825, CVE-2020-6826
    
    Package Information:
      https://launchpad.net/ubuntu/+source/firefox/75.0+build3-0ubuntu0.19.10.1
      https://launchpad.net/ubuntu/+source/firefox/75.0+build3-0ubuntu0.18.04.1
      https://launchpad.net/ubuntu/+source/firefox/75.0+build3-0ubuntu0.16.04.1
    
    

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