-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Critical: firefox security update Advisory ID: RHSA-2021:0656-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0656 Issue date: 2021-02-24 CVE Names: CVE-2021-23968 CVE-2021-23969 CVE-2021-23973 CVE-2021-23978 ==================================================================== 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 Critical. 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 78.8.0 ESR. Security Fix(es): * Mozilla: Content Security Policy violation report could have contained the destination of a redirect (CVE-2021-23968) * Mozilla: Content Security Policy violation report could have contained the destination of a redirect (CVE-2021-23969) * Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8 (CVE-2021-23978) * Mozilla: MediaError message property could have leaked information about cross-origin resources (CVE-2021-23973) 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/): 1932109 - CVE-2021-23969 Mozilla: Content Security Policy violation report could have contained the destination of a redirect 1932110 - CVE-2021-23968 Mozilla: Content Security Policy violation report could have contained the destination of a redirect 1932111 - CVE-2021-23973 Mozilla: MediaError message property could have leaked information about cross-origin resources 1932112 - CVE-2021-23978 Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: firefox-78.8.0-1.el7_9.src.rpm x86_64: firefox-78.8.0-1.el7_9.x86_64.rpm firefox-debuginfo-78.8.0-1.el7_9.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: firefox-78.8.0-1.el7_9.i686.rpm Red Hat Enterprise Linux Server (v. 7): Source: firefox-78.8.0-1.el7_9.src.rpm ppc64: firefox-78.8.0-1.el7_9.ppc64.rpm firefox-debuginfo-78.8.0-1.el7_9.ppc64.rpm ppc64le: firefox-78.8.0-1.el7_9.ppc64le.rpm firefox-debuginfo-78.8.0-1.el7_9.ppc64le.rpm s390x: firefox-78.8.0-1.el7_9.s390x.rpm firefox-debuginfo-78.8.0-1.el7_9.s390x.rpm x86_64: firefox-78.8.0-1.el7_9.x86_64.rpm firefox-debuginfo-78.8.0-1.el7_9.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): x86_64: firefox-78.8.0-1.el7_9.i686.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: firefox-78.8.0-1.el7_9.src.rpm x86_64: firefox-78.8.0-1.el7_9.x86_64.rpm firefox-debuginfo-78.8.0-1.el7_9.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: firefox-78.8.0-1.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-2021-23968 https://access.redhat.com/security/cve/CVE-2021-23969 https://access.redhat.com/security/cve/CVE-2021-23973 https://access.redhat.com/security/cve/CVE-2021-23978 https://access.redhat.com/security/updates/classification/#critical 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 iQIVAwUBYDZzuNzjgjWX9erEAQj8oA/+Io47QSygVkEggKPA1FdiJ0tM0Gz+B+dO ggHL3qGL1s6gTd/jq6dZg+99WZhjv3OjJX9FmW+VCdgQ4HA0OBwhlsZlQ6pHZ0Ee gAruOB1G+WmHFTrLK0TeTMW/HKy4cf7eSn9qBVjhZvtPHZmye4gwT4YqVfQTeYbH h3QEJ6EoO38eao00qiVUCMNt51ggGwfSQjxlP+v0XmiovJ0Gos11QZtRMEYM6hG8 HdOy5LKD7GW9OoTCR8qgKfIZLkPS+yofCtx05ge+xMV7hKQ8WnwosExDTu7DTAaB Sq9YmuAxym2T2QE+9GQZ6AKaPIxPG2BebK3pcQMmB6pYMbvuQWwj5QMg1PFp7QDy oBLYpqY/whlOJHun0EEY/ivOmbivuXF3thl0V4gSCofWJsB3BJu7pNPvmYJxQRYT aMLi6kdHfPC8liTvYdiLRy9r05ZUv3ARrW+TKe4n7Pv2845UlbuALhx/2KYt7PQO evoJyAcyBoktdnfeMiQ7BuwbOGrd5AcfP9eZJO9WZ3Jns8yIrDkOrnrfcR5Lt0dg EOOfncMvgmOCXGMNH/KzFoTq44JjZ3SDnDebQ4NZbbDd6NmZBP/nIeNJ3Y5sRFK0 l1zVa8LhGm0odYj2yGEtfK1KDqXAG0/uWlGjAMaY9KHRjUcUDy/y+Ki/3+YiJVkH S7oXWUYzdQo=ULel -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce