-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: firefox security update Advisory ID: RHSA-2021:5014-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:5014 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 7. 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 Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - 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 Client (v. 7): Source: firefox-91.4.0-1.el7_9.src.rpm x86_64: firefox-91.4.0-1.el7_9.x86_64.rpm firefox-debuginfo-91.4.0-1.el7_9.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: firefox-91.4.0-1.el7_9.i686.rpm Red Hat Enterprise Linux Server (v. 7): Source: firefox-91.4.0-1.el7_9.src.rpm ppc64: firefox-91.4.0-1.el7_9.ppc64.rpm firefox-debuginfo-91.4.0-1.el7_9.ppc64.rpm ppc64le: firefox-91.4.0-1.el7_9.ppc64le.rpm firefox-debuginfo-91.4.0-1.el7_9.ppc64le.rpm s390x: firefox-91.4.0-1.el7_9.s390x.rpm firefox-debuginfo-91.4.0-1.el7_9.s390x.rpm x86_64: firefox-91.4.0-1.el7_9.x86_64.rpm firefox-debuginfo-91.4.0-1.el7_9.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): x86_64: firefox-91.4.0-1.el7_9.i686.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: firefox-91.4.0-1.el7_9.src.rpm x86_64: firefox-91.4.0-1.el7_9.x86_64.rpm firefox-debuginfo-91.4.0-1.el7_9.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: firefox-91.4.0-1.el7_9.i686.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 iQIVAwUBYbDEbdzjgjWX9erEAQgdfA//dSWgiZLGkI78y9RmL5GuTvpB7nZJv0Lh 5bAJIeoE3E2DqNhZP/UinH1M5BeBZFJjnU4IFRkpPbWZilq3SMCSB6SUPobKIPZ6 q0zRBuUppbh3TEgJxNQC50JHoF+kzhrpaXOw8KfVLZtqRw1oepT5AHbQQ5hPYa14 d18rSn99VzrnAXg3EkMxhtpk8Ao2zru0+fggBi/NGL1/TOFFioJi+Lvx1UVjYgOk 1faou1KBwLMrZ0xOu7jSObg8WEyGOvsnMJykFDO1dQ6ruK91+C0r32RS1y8HFGy/ bB/m8DwejI2BXrDTd8XVof+u9tEAWKoIFmVNLQkVt/ySXRRnyPPiRlcQDIGXZGrP AmFnc6+sZk8YaZXGp1ntuZYNVvUbmo4hrS4O0ZtUYcEr3AmeOWsLGH/mvaZ1pjM1 S6l8hA3i1AFRrJ1shyPyGrLbZ/MkXSttG4L1DwRWo5C5Yvo5RYAUjf7xNXGh41dG FuZpDwBNF+V3oxkktY9xFyK3ZpgBk/EiKCuEhj4vxmt1GCmRlF1W+0Hs8ftAcP5k XgD253YNLyFjczpGtlrIq1A5x4NGr7k33I3Huq8OnMyvYyiROKsrVBmmIyFRcXoU 4ygkvc+nnFArnliKQXNU24PyR+FNpnvu/jmGYZgWwBmTCZIRqrnkIeYAU1aXuGI1 ytzsfr7RtRI=yeLy -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce