-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: thunderbird security update Advisory ID: RHSA-2021:0397-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0397 Issue date: 2021-02-03 CVE Names: CVE-2020-15685 CVE-2020-26976 CVE-2021-23953 CVE-2021-23954 CVE-2021-23960 CVE-2021-23964 ==================================================================== 1. Summary: An update for thunderbird 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) - ppc64le, x86_64 3. Description: Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.7.0. 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: IMAP Response Injection when using STARTTLS (CVE-2020-15685) * 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 All running instances of Thunderbird must be restarted for the update 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 1921543 - CVE-2020-15685 Mozilla: IMAP Response Injection when using STARTTLS 6. Package List: Red Hat Enterprise Linux AppStream EUS (v. 8.1): Source: thunderbird-78.7.0-1.el8_1.src.rpm ppc64le: thunderbird-78.7.0-1.el8_1.ppc64le.rpm thunderbird-debuginfo-78.7.0-1.el8_1.ppc64le.rpm thunderbird-debugsource-78.7.0-1.el8_1.ppc64le.rpm x86_64: thunderbird-78.7.0-1.el8_1.x86_64.rpm thunderbird-debuginfo-78.7.0-1.el8_1.x86_64.rpm thunderbird-debugsource-78.7.0-1.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-2020-15685 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 iQIVAwUBYBp+gtzjgjWX9erEAQjV0xAAiE/WtuhpitOfLzHJaeHT6pzAUG01Aeir 0d49I6HtPFI347hFAlcCXF0qLGWPFgfRivvJDUbRWPHtYPqMisXYnQlLKMVaUAq3 1mrDXLxf+afBgcVR+eVd176qn5P43UkegFXMoXNAjWzc1LUA7/sLfdqaC8haWy2e kgQLK5GaDoCumTS/rg0eIJiw9kG3x079BUcnJz1m7ztwZKl1Yt3WV+BSlGeqaLM3 nF/DLhozzM0FYkQ1RCdI6czOk8694vrOTwiFekkltv2f5Jl48LGo60ZhWyl1ekME UZB3RIfJUF4/49aK254ZysUZD57uIW664ufdbbPpodLsTqsbJ6VkBszGKI49cxNr 1zv7TuPr+o3ObUnHhPLOaiiGvtX1vIUE6DSlk1DyaRIRKjraPduKhSHZEBuX66BP BN+2GJM0h7hQuLaV6zqVbS7JPtiPA8rgWEHFDhidIMPddBfC4K+dqiemayrbhRKV AdIQuvekgQKD/wEF2BrzQLTjUE1J2Q9xfWpttLK6ip9p7daU9lSnZsx8rCu92bzV k+AxITV1Fcixj4aieKEIGkGOkeVQGlehBcMaoXrl0864mH95t8/KSwFul8hJ8MnN 9rfj4q7MvryAN4JCc8JZ/nogc2aPuy47y1yD2Dr1KP65JQTI8N5DUGqZV0cEkum8 exbeQaF82HM=9XId -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce