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Red Hat Enterprise Linux 7: RHSA-2021-2881-01 Important Mail Client Update

An update for thunderbird 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. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: thunderbird security update Advisory ID: RHSA-2021:2881-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:2881 Issue date: 2021-07-26 CVE Names: CVE-2021-29969 CVE-2021-29970 CVE-2021-29976 CVE-2021-30547 ==================================================================== 1. Summary: An update for thunderbird 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 Server Optional (v. 7) - ppc64le, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 3. Description: Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.12.0. Security Fix(es): * Mozilla: IMAP server responses sent by a MITM prior to STARTTLS could be processed (CVE-2021-29969) * Mozilla: Use-after-free in accessibility features of a document (CVE-2021-29970) * Mozilla: Memory safety bugs fixed in Firefox 90 and Firefox ESR 78.12 (CVE-2021-29976) * chromium-browser: Out of bounds write in ANGLE (CVE-2021-30547) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other relatedinformation, 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/): 1970109 - CVE-2021-30547 chromium-browser: Out of bounds write in ANGLE 1982013 - CVE-2021-29970 Mozilla: Use-after-free in accessibility features of a document 1982014 - CVE-2021-29976 Mozilla: Memory safety bugs fixed in Firefox 90 and Firefox ESR 78.12 1982015 - CVE-2021-29969 Mozilla: IMAP server responses sent by a MITM prior to STARTTLS could be processed 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: thunderbird-78.12.0-2.el7_9.src.rpm x86_64: thunderbird-78.12.0-2.el7_9.x86_64.rpm thunderbird-debuginfo-78.12.0-2.el7_9.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): Source: thunderbird-78.12.0-2.el7_9.src.rpm ppc64le: thunderbird-78.12.0-2.el7_9.ppc64le.rpm thunderbird-debuginfo-78.12.0-2.el7_9.ppc64le.rpm x86_64: thunderbird-78.12.0-2.el7_9.x86_64.rpm thunderbird-debuginfo-78.12.0-2.el7_9.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: thunderbird-78.12.0-2.el7_9.src.rpm x86_64: thunderbird-78.12.0-2.el7_9.x86_64.rpm thunderbird-debuginfo-78.12.0-2.el7_9.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-2021-29969 https://access.redhat.com/security/cve/CVE-2021-29970 https://access.redhat.com/security/cve/CVE-2021-29976 https://access.redhat.com/security/cve/CVE-2021-30547 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 iQIVAwUBYP6ng9zjgjWX9erEAQjm7RAAh38uRcanzH/juHmhknn+JBL0KYhZJrVY MxA1gikinbH7xJDqBZgSDcGmur5Vmyq4mNxAHoo3mAXloynvrCYxKYeKSIee2nfM yTCRpYTCKLI6wTS+p6XqLt+kgjaoFldh82gBplaBEmUn48/aKFfkyWkR8heFPW75 U7tRnZHcHGxxyUdQL6nkYlD0aOzL4c/lYKu8uslpFN8XPgq7t5sx9faDOY84hIHl 8JtzHwyV/iXy4uU1WazTqsbSHsEy+Gh/J2H5U3PZKXgEC2nuubLdrqta+NgkuZZI uVNFk/lMt3ALQmM8XnIeLIiiXOuIaZXV0plfyCnFhGNNGsfjCGbqd+d/A6PQAGqC ehljC38OeXlu5hVYqOijlk6y3MfTAPzRP/egTISWcF9R9URa5qe2fTrI6jjoVmXt soviMUm4IR5S7TZyWgtrQrn6AB6bFCzU9w2A6RlVv7uagZisRbfi8nNcRxSMuTqi 4ssevVmO8BpsLgYUkdBUHOsVS3NVqFyefitiOtsyksLFr6De0kFVgIyFBXVuMAGq ZHIwKPQDhJ567686yVfpl4t++ye1JSbe367xs7VQgkmE4nsyVcMVA/CECiTH35ZP Qz++Mvo3wm4isefksh68GJumTesYmuPrHO2uYqv14hiOp7SfLfht4phpyH3sYld8 5nIDpoq6t4o=RA8/ -----END PGP SIGNATURE----- -- RHSA-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. . Red Hat's new Thunderbird update addresses two critical vulnerabilities in IMAP protocol and memory safety, crucial for preventing unauthorized access and data breaches. Thunderbird Update, Red Hat Security Fixes, IMAP Security Issue, Memory Safety, Enterprise Linux. . Severity: Important. LinuxSecurity.com Team

Jul 26, 2021 •Important Red Hat