-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: firefox security update Advisory ID: RHSA-2021:1361-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:1361 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 8.2 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. 8.2) - 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 78.10.0 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 AppStream EUS (v. 8.2): Source: firefox-78.10.0-1.el8_2.src.rpm aarch64: firefox-78.10.0-1.el8_2.aarch64.rpm firefox-debuginfo-78.10.0-1.el8_2.aarch64.rpm firefox-debugsource-78.10.0-1.el8_2.aarch64.rpm ppc64le: firefox-78.10.0-1.el8_2.ppc64le.rpm firefox-debuginfo-78.10.0-1.el8_2.ppc64le.rpm firefox-debugsource-78.10.0-1.el8_2.ppc64le.rpm s390x: firefox-78.10.0-1.el8_2.s390x.rpm firefox-debuginfo-78.10.0-1.el8_2.s390x.rpm firefox-debugsource-78.10.0-1.el8_2.s390x.rpm x86_64: firefox-78.10.0-1.el8_2.x86_64.rpm firefox-debuginfo-78.10.0-1.el8_2.x86_64.rpm firefox-debugsource-78.10.0-1.el8_2.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-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 iQIVAwUBYIak/tzjgjWX9erEAQhfBA/9EmBBuAYkmUjm10Eg6Ym/DiQTNybKS/UC iZR7AIy5jR8xAvhfGzloW2axl0BUk4BYt8X4WkEmf4Q6GNvTcplurmCDuBYD3C0z j3EVgsn/Axpfr7xL8eaObKsc0qWUkB2e86DgnmJ2zz2JUguPTVkJWk9NV7KYiqnv DGwN7FuhGnFwrkSzJcBFTm1Pp4dgwqeJr8a/iCYvwm842/lnO2nXYXBTrXxiLINS 8DQJ5vEcqTP2QFWd2axBoukoF03zkTtU7WVAQU0Cs9PB3TZGGYRuCpZsdfgUkjmk oOYA6Y3lT3afQ2dK5HaT8E/F7jmnWVzchB3zP/yMrYPvdOl3Weo2/HpYpSdTjlLu NMdpX0GKNdFzyixZ22K7hSFQPJNgsq6+zuJWxajBF5fNEOoI9X8eQgA3/8VV0HiA qi3Tn70KYlTfjodcFxAc17pHjZ0UiakeSbAZ9QZ4ltV89qVXsbI2Zf8EPuoZN+Dv 5MA0IJOZaLAiaVz8oNoGXt6M5yBFGeSME9HD0RHicQPcfWWISJglWlk9oQnMnUWv CoFHHKrMCQ9q2ty/DPZKi31tc7dQVhf/dcm+NlFa9Uix7e2wIXsVPoUYZh3cTnfx p9xdlzD/8pCSGA72gMsGL9b34I+17kNwOOw9lobecpU5X3+YLr7uKMSL0t7g6W6r khzJopw4knc=ZyGQ -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce