-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: thunderbird security update Advisory ID: RHSA-2021:1353-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:1353 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 CVE-2021-29948 ==================================================================== 1. Summary: An update for thunderbird is now available for Red Hat Enterprise Linux 8. 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 (v. 8) - aarch64, ppc64le, x86_64 3. Description: Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.10.0. 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) * Mozilla: Race condition when reading from disk while verifying signatures (CVE-2021-29948) 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/): 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 1951381 - CVE-2021-29948 Mozilla: Race condition when reading from disk while verifying signatures 6. Package List: Red Hat Enterprise Linux AppStream (v. 8): Source: thunderbird-78.10.0-1.el8_3.src.rpm aarch64: thunderbird-78.10.0-1.el8_3.aarch64.rpm thunderbird-debuginfo-78.10.0-1.el8_3.aarch64.rpm thunderbird-debugsource-78.10.0-1.el8_3.aarch64.rpm ppc64le: thunderbird-78.10.0-1.el8_3.ppc64le.rpm thunderbird-debuginfo-78.10.0-1.el8_3.ppc64le.rpm thunderbird-debugsource-78.10.0-1.el8_3.ppc64le.rpm x86_64: thunderbird-78.10.0-1.el8_3.x86_64.rpm thunderbird-debuginfo-78.10.0-1.el8_3.x86_64.rpm thunderbird-debugsource-78.10.0-1.el8_3.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/cve/CVE-2021-29948 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 iQIVAwUBYIZT5tzjgjWX9erEAQh+cw//UaYUfVaXfEvGHpKHT5yTRHxkUB/S3ZbP uTOQ58Tf5zc2Wy/mQl97Fbp8OL4lIPyPh7iHiZyjpeLBwe9Mgptu0idJDb8w3zrY FsFFRrmFqWfEK+c9C1+gCGJIRqYTbpWXZxDKPvrYA9FptsHKUmD6LYefCxSQSgyb R5G2ADRD6LeMRxwKQgaha5vODee8tv9MKq05Bt6DIxyiwGL6NzvSMzeGwhLYQ3FZ pPLsLnFGMQlZdR400kR0sCkJspu55SlgXmDidafX4KvXEspyO6bxREyD9iF6uOtT nv0EuGMzax6aLqD/8HeB5UDxI/SsDpB6lNlaS+zzyousIxoFjlp5AKqqUYDx0uRs zhWJq/Ds60X3Gccm4mK6DgpzivjFW0wrHSLFmOu2Vs0YxL5Q2FbStPfpo92NBQT/ 4GilOvYeIB+9NmX96xtKJ4zFB75pDD5DCCmDLJrQweRfwIbCnazbvxGQhEpO2Cle tZv1qFpOTyEeirUCp+aPs1UWhP2kLJqTJa+1+aEn25gjsx/yBwb84dXrRcfdhLUY /Zuv4p5aszK8ufLrejVgp3pnBm9XZIsOGPKSZMTDA1O99cJDlhtphT+uquxfODUj r5zKsnLU/ImEZky7TFMPX4faGUh+Zjq1Km1uVqO7joJ0/Gz4ZMmfaAfnLSuG4hzt nyVUTma1nXc=cLlX -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce