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    RedHat: RHSA-2020-5234:01 Important: firefox security update

    Date 29 Nov 2020
    374
    Posted By LinuxSecurity Advisories
    An update for firefox is now available for Red Hat Enterprise Linux 8.2 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-2020:5234-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2020:5234
    Issue date:        2020-11-30
    CVE Names:         CVE-2020-16012 CVE-2020-26951 CVE-2020-26953 
                       CVE-2020-26956 CVE-2020-26958 CVE-2020-26959 
                       CVE-2020-26960 CVE-2020-26961 CVE-2020-26965 
                       CVE-2020-26968 
    =====================================================================
    
    1. Summary:
    
    An update for firefox is now available for Red Hat Enterprise Linux 8.2
    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. 8.2) - 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 78.5.0 ESR.
    
    Security Fix(es):
    
    * Mozilla: Parsing mismatches could confuse and bypass security sanitizer
    for chrome privileged code (CVE-2020-26951)
    
    * Mozilla: Memory safety bugs fixed in Firefox 83 and Firefox ESR 78.5
    (CVE-2020-26968)
    
    * Mozilla: Variable time processing of cross-origin images during drawImage
    calls (CVE-2020-16012)
    
    * Mozilla: Fullscreen could be enabled without displaying the security UI
    (CVE-2020-26953)
    
    * Mozilla: XSS through paste (manual and clipboard API) (CVE-2020-26956)
    
    * Mozilla: Requests intercepted through ServiceWorkers lacked MIME type
    restrictions (CVE-2020-26958)
    
    * Mozilla: Use-after-free in WebRequestService (CVE-2020-26959)
    
    * Mozilla: Potential use-after-free in uses of nsTArray (CVE-2020-26960)
    
    * Mozilla: DoH did not filter IPv4 mapped IP Addresses (CVE-2020-26961)
    
    * Mozilla: Software keyboards may have remembered typed passwords
    (CVE-2020-26965)
    
    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/):
    
    1898731 - CVE-2020-26951 Mozilla: Parsing mismatches could confuse and bypass security sanitizer for chrome privileged code
    1898732 - CVE-2020-16012 Mozilla: Variable time processing of cross-origin images during drawImage calls
    1898733 - CVE-2020-26953 Mozilla: Fullscreen could be enabled without displaying the security UI
    1898734 - CVE-2020-26956 Mozilla: XSS through paste (manual and clipboard API)
    1898735 - CVE-2020-26958 Mozilla: Requests intercepted through ServiceWorkers lacked MIME type restrictions
    1898736 - CVE-2020-26959 Mozilla: Use-after-free in WebRequestService
    1898737 - CVE-2020-26960 Mozilla: Potential use-after-free in uses of nsTArray
    1898738 - CVE-2020-26961 Mozilla: DoH did not filter IPv4 mapped IP Addresses
    1898739 - CVE-2020-26965 Mozilla: Software keyboards may have remembered typed passwords
    1898741 - CVE-2020-26968 Mozilla: Memory safety bugs fixed in Firefox 83 and Firefox ESR 78.5
    
    6. Package List:
    
    Red Hat Enterprise Linux AppStream EUS (v. 8.2):
    
    Source:
    firefox-78.5.0-1.el8_2.src.rpm
    
    aarch64:
    firefox-78.5.0-1.el8_2.aarch64.rpm
    firefox-debuginfo-78.5.0-1.el8_2.aarch64.rpm
    firefox-debugsource-78.5.0-1.el8_2.aarch64.rpm
    
    ppc64le:
    firefox-78.5.0-1.el8_2.ppc64le.rpm
    firefox-debuginfo-78.5.0-1.el8_2.ppc64le.rpm
    firefox-debugsource-78.5.0-1.el8_2.ppc64le.rpm
    
    s390x:
    firefox-78.5.0-1.el8_2.s390x.rpm
    firefox-debuginfo-78.5.0-1.el8_2.s390x.rpm
    firefox-debugsource-78.5.0-1.el8_2.s390x.rpm
    
    x86_64:
    firefox-78.5.0-1.el8_2.x86_64.rpm
    firefox-debuginfo-78.5.0-1.el8_2.x86_64.rpm
    firefox-debugsource-78.5.0-1.el8_2.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-2020-16012
    https://access.redhat.com/security/cve/CVE-2020-26951
    https://access.redhat.com/security/cve/CVE-2020-26953
    https://access.redhat.com/security/cve/CVE-2020-26956
    https://access.redhat.com/security/cve/CVE-2020-26958
    https://access.redhat.com/security/cve/CVE-2020-26959
    https://access.redhat.com/security/cve/CVE-2020-26960
    https://access.redhat.com/security/cve/CVE-2020-26961
    https://access.redhat.com/security/cve/CVE-2020-26965
    https://access.redhat.com/security/cve/CVE-2020-26968
    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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