-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: firefox security update Advisory ID: RHSA-2021:0290-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0290 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 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 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 Client (v. 7): Source: firefox-78.7.0-2.el7_9.src.rpm x86_64: firefox-78.7.0-2.el7_9.x86_64.rpm firefox-debuginfo-78.7.0-2.el7_9.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: firefox-78.7.0-2.el7_9.i686.rpm Red Hat Enterprise Linux Server (v. 7): Source: firefox-78.7.0-2.el7_9.src.rpm ppc64: firefox-78.7.0-2.el7_9.ppc64.rpm firefox-debuginfo-78.7.0-2.el7_9.ppc64.rpm ppc64le: firefox-78.7.0-2.el7_9.ppc64le.rpm firefox-debuginfo-78.7.0-2.el7_9.ppc64le.rpm s390x: firefox-78.7.0-2.el7_9.s390x.rpm firefox-debuginfo-78.7.0-2.el7_9.s390x.rpm x86_64: firefox-78.7.0-2.el7_9.x86_64.rpm firefox-debuginfo-78.7.0-2.el7_9.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): x86_64: firefox-78.7.0-2.el7_9.i686.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: firefox-78.7.0-2.el7_9.src.rpm x86_64: firefox-78.7.0-2.el7_9.x86_64.rpm firefox-debuginfo-78.7.0-2.el7_9.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: firefox-78.7.0-2.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-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 iQIVAwUBYBGyo9zjgjWX9erEAQi3pg/7BIrsdnHmW3R7KeSwRgChSEj/1ny+WdHW hridXfPtksI1YKrysaetsjooH7it+J8ynQSB6fUMAuh91aa/vESHfe03URYKj/4A IJOuS/Nx/tFlIA+r8DHZ38fCeDjx4ZKwrnR7CGUYGDHL/JwDVP5PAEtEdkCjh5Zx ppdkb6PoJmpIZ7cPTxYD3LCF4lxRj4hnSM/r1MQ4KCtBGZFrn2krGOLpGbkctJJL Q/g4zOd/xCzpmm/xKprVFDyUbaMrYY1L66Hq4kjjjf1/JTLVd5jzHIH/3obQzA20 Z48Sq8lG3DP6aZZNFj97+6WuCGruZsgF+7OCAe92o/fAvkqJdLaI24DfxiK44NMz Wjl97lmFqdts1Hkvi4CHaDeOrW5oVeQLLgEsGQV/qRSbHyochVhIy02tTHCqOry1 f6n9hmKgLxkq5Q5FSt/FF5PWspIJtfDnfV3+ESlOKAs6xzgTOkr700WaRYFutSUa WZaQqm/TOutycbrDpo0WDFIHsLnLObV9O3PRjl2azdCUF+oSRFrWmydgSx5i/S+3 Wr2fpRep6as/7sdQZ1Pgnr8Wviv45rhKslKJPbEMSzxcG3Qdc25cMdHlHHjx81BT U+N/fB+mPrDQ3Brr+HiJcD+G+sU6b78thNIMovuAln7FrxxEEEwwA68wyGm4vwpt fIWumfc+aT0=LSMs -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce