-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: firefox security update Advisory ID: RHSA-2021:1363-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:1363 Issue date: 2021-04-26 CVE Names: CVE-2021-23961 CVE-2021-23994 CVE-2021-23995 CVE-2021-23998 CVE-2021-23999 CVE-2021-24002 CVE-2021-29945 CVE-2021-29946 ==================================================================== 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 78.10.0 ESR. Security Fix(es): * Mozilla: Out of bound write due to lazy initialization (CVE-2021-23994) * Mozilla: Use-after-free in Responsive Design Mode (CVE-2021-23995) * Mozilla: More internal network hosts could have been probed by a malicious webpage (CVE-2021-23961) * Mozilla: Secure Lock icon could have been spoofed (CVE-2021-23998) * Mozilla: Blob URLs may have been granted additional privileges (CVE-2021-23999) * Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL (CVE-2021-24002) * Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads (CVE-2021-29945) * Mozilla: Port blocking could be bypassed (CVE-2021-29946) 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/): 1951364 - CVE-2021-23994 Mozilla: Out of bound write due to lazy initialization 1951365 - CVE-2021-23995 Mozilla: Use-after-free in Responsive Design Mode 1951366 - CVE-2021-23998 Mozilla: Secure Lock icon could have been spoofed 1951367 - CVE-2021-23961 Mozilla: More internal network hosts could have been probed by a malicious webpage 1951368 - CVE-2021-23999 Mozilla: Blob URLs may have been granted additional privileges 1951369 - CVE-2021-24002 Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL 1951370 - CVE-2021-29945 Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads 1951371 - CVE-2021-29946 Mozilla: Port blocking could be bypassed 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: firefox-78.10.0-1.el7_9.src.rpm x86_64: firefox-78.10.0-1.el7_9.x86_64.rpm firefox-debuginfo-78.10.0-1.el7_9.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: firefox-78.10.0-1.el7_9.i686.rpm Red Hat Enterprise Linux Server (v. 7): Source: firefox-78.10.0-1.el7_9.src.rpm ppc64: firefox-78.10.0-1.el7_9.ppc64.rpm firefox-debuginfo-78.10.0-1.el7_9.ppc64.rpm ppc64le: firefox-78.10.0-1.el7_9.ppc64le.rpm firefox-debuginfo-78.10.0-1.el7_9.ppc64le.rpm s390x: firefox-78.10.0-1.el7_9.s390x.rpm firefox-debuginfo-78.10.0-1.el7_9.s390x.rpm x86_64: firefox-78.10.0-1.el7_9.x86_64.rpm firefox-debuginfo-78.10.0-1.el7_9.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): x86_64: firefox-78.10.0-1.el7_9.i686.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: firefox-78.10.0-1.el7_9.src.rpm x86_64: firefox-78.10.0-1.el7_9.x86_64.rpm firefox-debuginfo-78.10.0-1.el7_9.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: firefox-78.10.0-1.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-2021-23961 https://access.redhat.com/security/cve/CVE-2021-23994 https://access.redhat.com/security/cve/CVE-2021-23995 https://access.redhat.com/security/cve/CVE-2021-23998 https://access.redhat.com/security/cve/CVE-2021-23999 https://access.redhat.com/security/cve/CVE-2021-24002 https://access.redhat.com/security/cve/CVE-2021-29945 https://access.redhat.com/security/cve/CVE-2021-29946 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 iQIVAwUBYIao+tzjgjWX9erEAQhzmQ/8DhtWDBfzXnyfQdPYghi3dH/nSeN5IYQZ 7RVywLz0EITJPS0peSM1ufBu9raeAe7M7Zx92usePp7ceTYXdGu3tUPDahVGRo6y A+c9VGiK8SGPfwYc8QvG7DLkjZXrmmSrP8TFB7fChe6yeJVNPc5+FCoiMEdiv4l8 99VsuUeMlkhgtI0B0KmcKeqO6gziKnb42mCsOCt6vf7CDLNN/eL3FHR/YW5DJmzm A7VBogIh94m936RJQfCq+MTY6R1+kjo698FqoNX0Nz95oJlzgVQVwzH60z/vGJFO isanqciJ76p7yoUr0Yvv7CzZiXH22WazFKzQovd72SSNEj2ZRLLlNFCWhPyPyB4F wFJC/ndcYcfFEP+0aJ5UMS32YlT5v32qDHY3Ti8YTsUqZtwmJgnK6YlAuJLQUTUU IVHLbx9dNWrsrrW6SFAByhdnRh4lQcvsPmXWUye2t7BVF3eOCiPSo8c0ctIjLkri TRZr23e+55DlAWGXCvgQMXMIlf60+vGFW1J6wA9I2J1E09Jj0q9RCqnEWecddVBM n2KmROd9ZrU+RNiW+cv23roRg6We7fgCURXKWMOHmlX37WOfSZ5ZWAb4T9DICZw0 ad/8LyVCalZlOpignUfAxsC/htothdQJ7pL2rCm4nw7Q4U+IW9c9KZfMQAknvbgB TXe44sBy4Ik=G+j3 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce