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    RedHat: RHSA-2020-5138:01 Critical: firefox security update

    Date 17 Nov 2020
    318
    Posted By LinuxSecurity Advisories
    An update for firefox is now available for Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which
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    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Critical: firefox security update
    Advisory ID:       RHSA-2020:5138-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2020:5138
    Issue date:        2020-11-17
    CVE Names:         CVE-2020-26950 
    =====================================================================
    
    1. Summary:
    
    An update for firefox is now available for Red Hat Enterprise Linux 8.0
    Update Services for SAP Solutions.
    
    Red Hat Product Security has rated this update as having a security impact
    of Critical. 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 AppStream E4S (v. 8.0) - aarch64, ppc64le, s390x, x86_64
    
    3. Description:
    
    Mozilla Firefox is an open-source web browser, designed for standards
    compliance, performance, and portability.
    
    This update upgrades Firefox to version 78.4.1 ESR.
    
    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
    
    After installing the update, Firefox must be restarted for the changes 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 AppStream E4S (v. 8.0):
    
    Source:
    firefox-78.4.1-1.el8_0.src.rpm
    
    aarch64:
    firefox-78.4.1-1.el8_0.aarch64.rpm
    firefox-debuginfo-78.4.1-1.el8_0.aarch64.rpm
    firefox-debugsource-78.4.1-1.el8_0.aarch64.rpm
    
    ppc64le:
    firefox-78.4.1-1.el8_0.ppc64le.rpm
    firefox-debuginfo-78.4.1-1.el8_0.ppc64le.rpm
    firefox-debugsource-78.4.1-1.el8_0.ppc64le.rpm
    
    s390x:
    firefox-78.4.1-1.el8_0.s390x.rpm
    firefox-debuginfo-78.4.1-1.el8_0.s390x.rpm
    firefox-debugsource-78.4.1-1.el8_0.s390x.rpm
    
    x86_64:
    firefox-78.4.1-1.el8_0.x86_64.rpm
    firefox-debuginfo-78.4.1-1.el8_0.x86_64.rpm
    firefox-debugsource-78.4.1-1.el8_0.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/#critical
    
    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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