-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: thunderbird security update Advisory ID: RHSA-2021:3839-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:3839 Issue date: 2021-10-13 CVE Names: CVE-2021-32810 CVE-2021-38496 CVE-2021-38497 CVE-2021-38498 CVE-2021-38500 CVE-2021-38501 CVE-2021-38502 ===================================================================== 1. Summary: An update for thunderbird 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, x86_64 3. Description: Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.2.0. Security Fix(es): * Mozilla: Use-after-free in MessageTask (CVE-2021-38496) * Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 (CVE-2021-38500) * Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 (CVE-2021-38501) * Mozilla: Downgrade attack on SMTP STARTTLS connections (CVE-2021-38502) * rust-crossbeam-deque: race condition may lead to double free (CVE-2021-32810) * Mozilla: Validation message could have been overlaid on another origin (CVE-2021-38497) * Mozilla: Use-after-free of nsLanguageAtomService object (CVE-2021-38498) 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/): 1990342 - CVE-2021-32810 rust-crossbeam-deque: race condition may lead to double free 2011097 - CVE-2021-38496 Mozilla: Use-after-free in MessageTask 2011098 - CVE-2021-38497 Mozilla: Validation message could have been overlaid on another origin 2011099 - CVE-2021-38498 Mozilla: Use-after-free of nsLanguageAtomService object 2011100 - CVE-2021-38500 Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 2011101 - CVE-2021-38501 Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 2013469 - CVE-2021-38502 Mozilla: Downgrade attack on SMTP STARTTLS connections 6. Package List: Red Hat Enterprise Linux AppStream EUS (v. 8.2): Source: thunderbird-91.2.0-1.el8_2.src.rpm aarch64: thunderbird-91.2.0-1.el8_2.aarch64.rpm thunderbird-debuginfo-91.2.0-1.el8_2.aarch64.rpm thunderbird-debugsource-91.2.0-1.el8_2.aarch64.rpm ppc64le: thunderbird-91.2.0-1.el8_2.ppc64le.rpm thunderbird-debuginfo-91.2.0-1.el8_2.ppc64le.rpm thunderbird-debugsource-91.2.0-1.el8_2.ppc64le.rpm x86_64: thunderbird-91.2.0-1.el8_2.x86_64.rpm thunderbird-debuginfo-91.2.0-1.el8_2.x86_64.rpm thunderbird-debugsource-91.2.0-1.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-2021-32810 https://access.redhat.com/security/cve/CVE-2021-38496 https://access.redhat.com/security/cve/CVE-2021-38497 https://access.redhat.com/security/cve/CVE-2021-38498 https://access.redhat.com/security/cve/CVE-2021-38500 https://access.redhat.com/security/cve/CVE-2021-38501 https://access.redhat.com/security/cve/CVE-2021-38502 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 iQIVAwUBYWam6NzjgjWX9erEAQhP7RAAl+2nhF5jf49AWDmtjdlFUataUsgxlclU x4UAyTvrWb5e7GQ+gzGlaYNRBrz+lbEo7Ei2TkbAZ+uB4sa7gZfONxSyI6kw4cHA QTBC3KD08JBPH+1YDN9pQ64MzTM6D55rIvXPR3jnQiVn1kb/G4w3ygjixlqV8JYd yEX8JlfxHJh8m2V1rPPd5T+5dPRRE+8IMSxKW9tMuBgAB7wUkJYErzA/Q4lKMVzb yXKG1Bu3DheZaCxpcBUFGfyJuCsj2Ehu2rC/pIzBFJHxPOxvTSVQCKoTjb4AVplb YSU7d+r1U0j4iqZjssSDoVHL6qTDGTqKmYIgQ5YaUdkpaWv4FhL4mPiOqcntb1uQ JOpJcti8C5kPU08xi70CGLGd/Djb5oKZN38RNbVyjHh97aEHf+sc3xBiykfbYkRE UZZ+sMRnimeuUqGv0YW7KwSEF7K77f4r2YaQuzUvFoekfuOAgdYLbGohKMB/0Fio HCFAgB3qGf0xRUafOE29HGoHgXiDdufVQwiu52A21KG20IcyuNWVS34tft486Qrj Gx9RGSZJ3r30MY/uQFdu5u/ZiQrwHQuK9DTTOHO4DZ8qxWn1ZnW5Z8UvArhWde3Q 89V7vBkPMlqUNNXvoyd4S5tW53X5uwlVdVVE2f5e86zJjaoPtc8xGL2yeEtrMzzT 2CuqEsGV68s= =S3K2 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce