-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: firefox security update Advisory ID: RHSA-2021:0285-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0285 Issue date: 2021-01-27 CVE Names: CVE-2020-26976 CVE-2021-23953 CVE-2021-23954 CVE-2021-23960 CVE-2021-23964 ===================================================================== 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 78.7.0 ESR. Security Fix(es): * Mozilla: Cross-origin information leakage via redirected PDF requests (CVE-2021-23953) * Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements (CVE-2021-23954) * Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7 (CVE-2021-23964) * Mozilla: HTTPS pages could have been intercepted by a registered service worker when they should not have been (CVE-2020-26976) * Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC (CVE-2021-23960) 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/): 1920646 - CVE-2021-23953 Mozilla: Cross-origin information leakage via redirected PDF requests 1920648 - CVE-2021-23954 Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements 1920649 - CVE-2020-26976 Mozilla: HTTPS pages could have been intercepted by a registered service worker when they should not have been 1920650 - CVE-2021-23960 Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC 1920651 - CVE-2021-23964 Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7 6. Package List: Red Hat Enterprise Linux AppStream EUS (v. 8.1): Source: firefox-78.7.0-2.el8_1.src.rpm aarch64: firefox-78.7.0-2.el8_1.aarch64.rpm firefox-debuginfo-78.7.0-2.el8_1.aarch64.rpm firefox-debugsource-78.7.0-2.el8_1.aarch64.rpm ppc64le: firefox-78.7.0-2.el8_1.ppc64le.rpm firefox-debuginfo-78.7.0-2.el8_1.ppc64le.rpm firefox-debugsource-78.7.0-2.el8_1.ppc64le.rpm s390x: firefox-78.7.0-2.el8_1.s390x.rpm firefox-debuginfo-78.7.0-2.el8_1.s390x.rpm firefox-debugsource-78.7.0-2.el8_1.s390x.rpm x86_64: firefox-78.7.0-2.el8_1.x86_64.rpm firefox-debuginfo-78.7.0-2.el8_1.x86_64.rpm firefox-debugsource-78.7.0-2.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-2020-26976 https://access.redhat.com/security/cve/CVE-2021-23953 https://access.redhat.com/security/cve/CVE-2021-23954 https://access.redhat.com/security/cve/CVE-2021-23960 https://access.redhat.com/security/cve/CVE-2021-23964 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 iQIVAwUBYBGZU9zjgjWX9erEAQiIVA/9GneBWnkzT1f3UXpAbZdHwrqDkJojVHmt TyoCIeBGZmpFptJ5VegG8TFd+juoD4kClFoKfGoR4hGs/usVKtaMtZq6rEbj1/Lk iajcC/6YZ9qZ1owphbX3S2YmjJ5VvYykUzNLUmt+it/ee8qb9XYlMQ6cRFi2aQkO sF7a+OQ3WiTucB9Qg1GlapkCv1+UW44RFX6isMGSyy25jCs/DTnowBZUKnu+HGs7 wIxASipHusZv0Pq+QRouScb+6egd20WQoPmiVy1SdT6pVcb8IsAOKLBEz495o7fP uadXe9bJjhCfX7HMeuqYp6n4FM1+JtgzbzcCzNoTYEfDAAITaUfCsE8f8WJKsXtY 1Q1iw9G1lvLl6WOigQ4mq0eaf+uRcKiPRi+dFAXVx/9uUPQkH2vHHcLtOkFloHgW gxwNXRCDH4RaawJMragk9ZsYjI/hAlck8lyt1dd7fL3IV0VtG9VB3D/sOrZw5StQ pMvTtqVxdnDZ8qHw3Cf4UVZMzsyeATCYLtZN8fFBVyyvhmFLMhDq0n9DA/Hvk/EB Dq8DfX+xH8sRnvptWygDjiLRSb+eHxlf4+5TNkpKIXHnA31I6uZ9k9q2BlpVTD7v y2/iHDhI1ygc6If1ch2KJ21scWpl8EEF5VCzgbIHNde6y+ZpJ0fek/isrpc/5d7s dx1hbBScAmg= =VtRh -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce