Linux Security
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    Linux Security

    RedHat: RHSA-2020-5163:01 Important: thunderbird security update

    Date 22 Nov 2020
    290
    Posted By LinuxSecurity Advisories
    An update for thunderbird is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability
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    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Important: thunderbird security update
    Advisory ID:       RHSA-2020:5163-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2020:5163
    Issue date:        2020-11-23
    CVE Names:         CVE-2020-26950 
    =====================================================================
    
    1. Summary:
    
    An update for thunderbird is now available for Red Hat Enterprise Linux 7.
    
    Red Hat Product Security has rated this update as having a security impact
    of Important. A Common Vulnerability Scoring System (CVSS) base score,
    which gives a detailed severity rating, is available for each vulnerability
    from the CVE link(s) in the References section.
    
    2. Relevant releases/architectures:
    
    Red Hat Enterprise Linux Client (v. 7) - x86_64
    Red Hat Enterprise Linux Server Optional (v. 7) - ppc64le, x86_64
    Red Hat Enterprise Linux Workstation (v. 7) - x86_64
    
    3. Description:
    
    Mozilla Thunderbird is a standalone mail and newsgroup client.
    
    This update upgrades Thunderbird to version 78.4.3.
    
    Security Fix(es):
    
    * Mozilla: Write side effects in MCallGetProperty opcode not accounted for
    (CVE-2020-26950)
    
    For more details about the security issue(s), including the impact, a CVSS
    score, acknowledgments, and other related information, refer to the CVE
    page(s) listed in the References section.
    
    4. Solution:
    
    For details on how to apply this update, which includes the changes
    described in this advisory, refer to:
    
    https://access.redhat.com/articles/11258
    
    All running instances of Thunderbird must be restarted for the update to
    take effect.
    
    5. Bugs fixed (https://bugzilla.redhat.com/):
    
    1896306 - CVE-2020-26950 Mozilla: Write side effects in MCallGetProperty opcode not accounted for
    
    6. Package List:
    
    Red Hat Enterprise Linux Client (v. 7):
    
    Source:
    thunderbird-78.4.3-1.el7_9.src.rpm
    
    x86_64:
    thunderbird-78.4.3-1.el7_9.x86_64.rpm
    thunderbird-debuginfo-78.4.3-1.el7_9.x86_64.rpm
    
    Red Hat Enterprise Linux Server Optional (v. 7):
    
    Source:
    thunderbird-78.4.3-1.el7_9.src.rpm
    
    ppc64le:
    thunderbird-78.4.3-1.el7_9.ppc64le.rpm
    thunderbird-debuginfo-78.4.3-1.el7_9.ppc64le.rpm
    
    x86_64:
    thunderbird-78.4.3-1.el7_9.x86_64.rpm
    thunderbird-debuginfo-78.4.3-1.el7_9.x86_64.rpm
    
    Red Hat Enterprise Linux Workstation (v. 7):
    
    Source:
    thunderbird-78.4.3-1.el7_9.src.rpm
    
    x86_64:
    thunderbird-78.4.3-1.el7_9.x86_64.rpm
    thunderbird-debuginfo-78.4.3-1.el7_9.x86_64.rpm
    
    These packages are GPG signed by Red Hat for security.  Our key and
    details on how to verify the signature are available from
    https://access.redhat.com/security/team/key/
    
    7. References:
    
    https://access.redhat.com/security/cve/CVE-2020-26950
    https://access.redhat.com/security/updates/classification/#important
    
    8. Contact:
    
    The Red Hat security contact is . More contact
    details at https://access.redhat.com/security/team/contact/
    
    Copyright 2020 Red Hat, Inc.
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