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Red Hat 8.1: RHSA-2021:4607 Important: Firefox Security Update

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,. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: firefox security update Advisory ID: RHSA-2021:4607-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4607 Issue date: 2021-11-10 CVE Names: CVE-2021-38503 CVE-2021-38504 CVE-2021-38506 CVE-2021-38507 CVE-2021-38508 CVE-2021-38509 ==================================================================== 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 91.3.0 ESR. Security Fix(es): * Mozilla: Use-after-free in HTTP2 Session object * Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3 * Mozilla: iframe sandbox rules did not apply to XSLT stylesheets (CVE-2021-38503) * Mozilla: Use-after-free in file picker dialog (CVE-2021-38504) * Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning (CVE-2021-38506) * Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted onother ports (CVE-2021-38507) * Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing (CVE-2021-38508) * Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain (CVE-2021-38509) 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/): 2019621 - CVE-2021-38503 Mozilla: iframe sandbox rules did not apply to XSLT stylesheets 2019622 - CVE-2021-38504 Mozilla: Use-after-free in file picker dialog 2019624 - CVE-2021-38506 Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning 2019625 - CVE-2021-38507 Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports 2019626 - Mozilla: Use-after-free in HTTP2 Session object 2019627 - CVE-2021-38508 Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing 2019628 - CVE-2021-38509 Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain 2019630 - Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3 6. Package List: Red Hat Enterprise Linux AppStream EUS (v.8.1): Source: firefox-91.3.0-1.el8_1.src.rpm aarch64: firefox-91.3.0-1.el8_1.aarch64.rpm firefox-debuginfo-91.3.0-1.el8_1.aarch64.rpm firefox-debugsource-91.3.0-1.el8_1.aarch64.rpm ppc64le: firefox-91.3.0-1.el8_1.ppc64le.rpm firefox-debuginfo-91.3.0-1.el8_1.ppc64le.rpm firefox-debugsource-91.3.0-1.el8_1.ppc64le.rpm s390x: firefox-91.3.0-1.el8_1.s390x.rpm firefox-debuginfo-91.3.0-1.el8_1.s390x.rpm firefox-debugsource-91.3.0-1.el8_1.s390x.rpm x86_64: firefox-91.3.0-1.el8_1.x86_64.rpm firefox-debuginfo-91.3.0-1.el8_1.x86_64.rpm firefox-debugsource-91.3.0-1.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-2021-38503 https://access.redhat.com/security/cve/CVE-2021-38504 https://access.redhat.com/security/cve/CVE-2021-38506 https://access.redhat.com/security/cve/CVE-2021-38507 https://access.redhat.com/security/cve/CVE-2021-38508 https://access.redhat.com/security/cve/CVE-2021-38509 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 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPGv1 iQIVAwUBYYvZw9zjgjWX9erEAQj1HhAAnFcL8IkuZXvZ0Y0H4Bxk2BODBTf/jfay iJndhgQhBWjihD/fNWmqTPpeap5BPu43Mn4LlTMuKCHnrKSg1aNGhEKMTk9HAH3V zCzrcu7F01jGNY7vLE5aDmBrpfWtBkEcAW4tS6bYWUIQ+7mweOeFkVyr8+JG0v45 WV4/BYpNtlwwwIWUEkMbxV/SGivZAWfZZ0lVD5AoAHc4QTZNB5N7103DryfS7LVk UzAtHfv3g6oE8HQeOPaiYs7yRGiXm3PRk+06ZT/Xp/vgi2QxZ2HjxF2VQ8J4HwVt eHVtwR8tC9sv2ON2lfvmgIcv6iW+z2gzQDvb3Hi4Gq38bQ35RhXzFVgGbSVt3NTo nEq7laxXFHjlYF8v3imlad/mqDcRfncA0Q17g9X3doCI77t5qa3Xl2b9G0ddY2HL vHXmHYjkPvn4g28dB6Xt4fEmwJEdPC+lvr1OZGI0BZ4ZBpaarRPxZTCYZoqUZ7KN etNb0rz0CvfA4LnMXyrvoOS9ktqPZ/jjLde1PqQnlhncj1NfNkLypmVEYsYqSJxt LbcOkpo2lZgEz498yKb5IIS0BDQ2hmuSjN5+R7iG2XmOeen/OAWntzDLx3NWySNR 8CMP93lhZsb1AWB1b+k/ZKgt1UOm+MTieVG9tPH+HqOAPsB5UcdkiL+Nn4x7D0hv 5CKD5Ox8niU=Bi2t -----END PGP SIGNATURE----- -- RHSA-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. . New Firefox version released for RHEL 8.1. Classified as High Priority. Addresses several vulnerabilities and concerns. System restart necessary.. Red Hat Firefox Update, Important Security Issues, Firefox Memory Safety. . Severity: Important. LinuxSecurity.com Team

Nov 10, 2021 •Important Red Hat