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    RedHat: RHSA-2020-3833:01 Important: firefox security update

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    An update for firefox is now available for Red Hat Enterprise Linux 8.1 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score,
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    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Important: firefox security update
    Advisory ID:       RHSA-2020:3833-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2020:3833
    Issue date:        2020-09-24
    CVE Names:         CVE-2020-15673 CVE-2020-15676 CVE-2020-15677 
                       CVE-2020-15678 
    =====================================================================
    
    1. Summary:
    
    An update for firefox is now available for Red Hat Enterprise Linux 8.1
    Extended Update Support.
    
    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 AppStream EUS (v. 8.1) - 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 78.3.0 ESR.
    
    Security Fix(es):
    
    * Mozilla: Memory safety bugs fixed in Firefox 81 and Firefox ESR 78.3
    (CVE-2020-15673)
    
    * Mozilla: XSS when pasting attacker-controlled data into a contenteditable
    element (CVE-2020-15676)
    
    * Mozilla: Download origin spoofing via redirect (CVE-2020-15677)
    
    * Mozilla: When recursing through layers while scrolling, an iterator may
    have become invalid, resulting in a potential use-after-free scenario
    (CVE-2020-15678)
    
    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/):
    
    1881664 - CVE-2020-15677 Mozilla: Download origin spoofing via redirect
    1881665 - CVE-2020-15676 Mozilla: XSS when pasting attacker-controlled data into a contenteditable element
    1881666 - CVE-2020-15678 Mozilla: When recursing through layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free scenario
    1881667 - CVE-2020-15673 Mozilla: Memory safety bugs fixed in Firefox 81 and Firefox ESR 78.3
    
    6. Package List:
    
    Red Hat Enterprise Linux AppStream EUS (v. 8.1):
    
    Source:
    firefox-78.3.0-1.el8_1.src.rpm
    
    aarch64:
    firefox-78.3.0-1.el8_1.aarch64.rpm
    firefox-debuginfo-78.3.0-1.el8_1.aarch64.rpm
    firefox-debugsource-78.3.0-1.el8_1.aarch64.rpm
    
    ppc64le:
    firefox-78.3.0-1.el8_1.ppc64le.rpm
    firefox-debuginfo-78.3.0-1.el8_1.ppc64le.rpm
    firefox-debugsource-78.3.0-1.el8_1.ppc64le.rpm
    
    s390x:
    firefox-78.3.0-1.el8_1.s390x.rpm
    firefox-debuginfo-78.3.0-1.el8_1.s390x.rpm
    firefox-debugsource-78.3.0-1.el8_1.s390x.rpm
    
    x86_64:
    firefox-78.3.0-1.el8_1.x86_64.rpm
    firefox-debuginfo-78.3.0-1.el8_1.x86_64.rpm
    firefox-debugsource-78.3.0-1.el8_1.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-2020-15673
    https://access.redhat.com/security/cve/CVE-2020-15676
    https://access.redhat.com/security/cve/CVE-2020-15677
    https://access.redhat.com/security/cve/CVE-2020-15678
    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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