-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: firefox security update Advisory ID: RHSA-2021:5015-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:5015 Issue date: 2021-12-08 CVE Names: CVE-2021-43536 CVE-2021-43537 CVE-2021-43538 CVE-2021-43539 CVE-2021-43541 CVE-2021-43542 CVE-2021-43543 CVE-2021-43545 CVE-2021-43546 ===================================================================== 1. Summary: An update for firefox is now available for Red Hat Enterprise Linux 8.4 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.8.4) - 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 91.4.0 ESR. Security Fix(es): * Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4 * Mozilla: URL leakage when navigating while executing asynchronous function (CVE-2021-43536) * Mozilla: Heap buffer overflow when using structured clone (CVE-2021-43537) * Mozilla: Missing fullscreen and pointer lock notification when requesting both (CVE-2021-43538) * Mozilla: GC rooting failure when calling wasm instance methods (CVE-2021-43539) * Mozilla: External protocol handler parameters were unescaped (CVE-2021-43541) * Mozilla: XMLHttpRequest error codes could have leaked the existence of an external protocol handler (CVE-2021-43542) * Mozilla: Bypass of CSP sandbox directive when embedding (CVE-2021-43543) * Mozilla: Denial of Service when using the Location API in a loop (CVE-2021-43545) * Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed (CVE-2021-43546) 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/): 2030105 - CVE-2021-43536 Mozilla: URL leakage when navigating while executing asynchronous function 2030106 - CVE-2021-43537 Mozilla: Heap buffer overflow when using structured clone 2030109 - CVE-2021-43538 Mozilla: Missing fullscreen and pointer lock notification when requesting both 2030110 - CVE-2021-43539 Mozilla: GC rooting failure when calling wasm instance methods 2030111 - CVE-2021-43541 Mozilla: External protocol handler parameters were unescaped 2030112 - CVE-2021-43542 Mozilla: XMLHttpRequest error codes could have leaked the existence of an external protocol handler 2030113 - CVE-2021-43543 Mozilla: Bypass of CSP sandbox directive when embedding 2030114 - CVE-2021-43545 Mozilla: Denial of Service when using the Location API in a loop 2030115 - CVE-2021-43546 Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed 2030116 - Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4 6. Package List: Red Hat Enterprise Linux AppStream EUS (v.8.4): Source: firefox-91.4.0-1.el8_4.src.rpm aarch64: firefox-91.4.0-1.el8_4.aarch64.rpm firefox-debuginfo-91.4.0-1.el8_4.aarch64.rpm firefox-debugsource-91.4.0-1.el8_4.aarch64.rpm ppc64le: firefox-91.4.0-1.el8_4.ppc64le.rpm firefox-debuginfo-91.4.0-1.el8_4.ppc64le.rpm firefox-debugsource-91.4.0-1.el8_4.ppc64le.rpm s390x: firefox-91.4.0-1.el8_4.s390x.rpm firefox-debuginfo-91.4.0-1.el8_4.s390x.rpm firefox-debugsource-91.4.0-1.el8_4.s390x.rpm x86_64: firefox-91.4.0-1.el8_4.x86_64.rpm firefox-debuginfo-91.4.0-1.el8_4.x86_64.rpm firefox-debugsource-91.4.0-1.el8_4.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-2021-43536 https://access.redhat.com/security/cve/CVE-2021-43537 https://access.redhat.com/security/cve/CVE-2021-43538 https://access.redhat.com/security/cve/CVE-2021-43539 https://access.redhat.com/security/cve/CVE-2021-43541 https://access.redhat.com/security/cve/CVE-2021-43542 https://access.redhat.com/security/cve/CVE-2021-43543 https://access.redhat.com/security/cve/CVE-2021-43545 https://access.redhat.com/security/cve/CVE-2021-43546 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: GnuPG v1 iQIVAwUBYbC26NzjgjWX9erEAQg1Tg//Xyy7RVC5i/qQAY6G0Uylm0/twVuLaog8 4pYP64lrMycRHdnp1MXsvwNfxjbLBAIDuA0K6tH9XBAppdfk3CpcPNA/WhqmhHSJ /Zz6CfIBUNCFTLuw2Y5/htgm+oz5jVud9CRCjbwzyiti1ZlN9xNAhRX6ghqURey4 g32Nd00UkxkhLkdieyoPRI0JbuaH/V+G0f8psePK4fElOrDlBoddfAtHwT6BkSxR /eyvBRowtHKe0arEEs4dg2mWFKmIy76FcaLkAzWCaoyfK32WAzzxi6tx1IzRngiQ TdIQ5jamsb9X9PIJAJ3iEGNUhf5K5d6og9M5t51w3KC3Fs5r2u0ehnn8cJ5gi0+z 5sYGK8E11QBfazpGLkaoWpz3ILRt9854jLdAUI3XvEelTYoHhUAGT4YgYq/1ATHX afF0PRf6TLeJakkUULPmI9jAiHi4WsAuiCUt15/EtNUIiu9688Zl7cQeMcOr6whH Z/5Av1QfycE0Vp5eFui9djFH3zjhBgP4Ds+AYam084sXw8+2Lv0gMNK6vA58sU9f tJQGXnQJp5k6fEVhbXvXq+arJJ8nGuCZ+e3addjgS9iQLjjDpYuGPTpgU46iZU4+ p62IakktsXbeFakq0zYzDGtTlyUvYMao9pC7FaPFT3NZYugFqa1ZcLzilwGzP6kw lIfoP4s0EU4= =tbOy -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce