CVE-2021-4126 SUSE CVE security@suse.de SUSE Security Team SUSE CVE-2021-4126 Interim 1 20 2025-05-17T02:03:52Z current 2021-12-25T01:58:17Z 2025-05-17T02:03:52Z cve-database/bin/generate-cvrf-cve.pl 2020-12-27T01:00:00Z CVE-2021-4126 When receiving an OpenPGP/MIME signed email message that contains an additional outer MIME message layer, for example a message footer added by a mailing list gateway, Thunderbird only considered the inner signed message for the signature validity. This gave the false impression that the additional contents were also covered by the digital signature. Starting with Thunderbird version 91.4.1, only the signature that belongs to the top level MIME part will be considered for the displayed status. This vulnerability affects Thunderbird < 91.4.1. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). https://lists.suse.com/pipermail/sle-security-updates/2022-January/009996.html E-Mail link for SUSE-SU-2022:0058-1 https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/ZTUQBSMWYBVSTVDYNNRW5EOI5CCOSTPZ/ E-Mail link for openSUSE-SU-2022:0058-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings SUSE Linux Enterprise Workstation Extension 15 SP3 SUSE Linux Enterprise Workstation Extension 15 SP4 SUSE Linux Enterprise Workstation Extension 15 SP5 SUSE Linux Enterprise Workstation Extension 15 SP6 SUSE Linux Enterprise Workstation Extension 15 SP7 SUSE Linux Enterprise Module for Package Hub 15 SP4 SUSE Linux Enterprise Module for Package Hub 15 SP5 SUSE Linux Enterprise Module for Package Hub 15 SP6 SUSE Linux Enterprise Module for Package Hub 15 SP7 SUSE Linux Enterprise Workstation Extension 15 SP3 SUSE Linux Enterprise Workstation Extension 15 SP4 SUSE Linux Enterprise Workstation Extension 15 SP5 SUSE Linux Enterprise Workstation Extension 15 SP6 SUSE Linux Enterprise Workstation Extension 15 SP7 SUSE Linux Enterprise Workstation Extension 15 SP3 SUSE Linux Enterprise Workstation Extension 15 SP4 SUSE Linux Enterprise Workstation Extension 15 SP5 SUSE Linux Enterprise Workstation Extension 15 SP6 SUSE Linux Enterprise Workstation Extension 15 SP7 openSUSE Leap 15.3 openSUSE Leap 15.4 openSUSE Tumbleweed MozillaThunderbird-91.4.1-1.1 MozillaThunderbird-91.4.1-8.48.1 MozillaThunderbird-91.8.0-150200.8.65.1 MozillaThunderbird-translations-common-91.4.1-1.1 MozillaThunderbird-translations-common-91.4.1-8.48.1 MozillaThunderbird-translations-common-91.8.0-150200.8.65.1 MozillaThunderbird-translations-other-91.4.1-1.1 MozillaThunderbird-translations-other-91.4.1-8.48.1 MozillaThunderbird-translations-other-91.8.0-150200.8.65.1 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP4 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP4 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP4 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP5 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP5 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP5 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP6 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP6 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP6 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP7 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP7 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP7 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP3 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP3 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP3 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP4 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP4 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP4 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP5 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP5 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP5 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP6 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP6 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP6 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP7 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP7 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP7 MozillaThunderbird-91.4.1-8.48.1 as a component of openSUSE Leap 15.3 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of openSUSE Leap 15.3 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of openSUSE Leap 15.3 MozillaThunderbird-91.8.0-150200.8.65.1 as a component of openSUSE Leap 15.4 MozillaThunderbird-translations-common-91.8.0-150200.8.65.1 as a component of openSUSE Leap 15.4 MozillaThunderbird-translations-other-91.8.0-150200.8.65.1 as a component of openSUSE Leap 15.4 MozillaThunderbird-91.4.1-1.1 as a component of openSUSE Tumbleweed MozillaThunderbird-translations-common-91.4.1-1.1 as a component of openSUSE Tumbleweed MozillaThunderbird-translations-other-91.4.1-1.1 as a component of openSUSE Tumbleweed When receiving an OpenPGP/MIME signed email message that contains an additional outer MIME message layer, for example a message footer added by a mailing list gateway, Thunderbird only considered the inner signed message for the signature validity. This gave the false impression that the additional contents were also covered by the digital signature. Starting with Thunderbird version 91.4.1, only the signature that belongs to the top level MIME part will be considered for the displayed status. This vulnerability affects Thunderbird < 91.4.1. CVE-2021-4126 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP4:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP4:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP5:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP5:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP6:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP6:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP7:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP7:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP4:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP4:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP4:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP5:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP5:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP5:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP6:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP6:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP6:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP7:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP7:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP7:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP3:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP3:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP3:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP4:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP4:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP4:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP5:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP5:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP5:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP6:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP6:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP6:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP7:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP7:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP7:MozillaThunderbird-translations-other-91.4.1-8.48.1 openSUSE Leap 15.3:MozillaThunderbird-91.4.1-8.48.1 openSUSE Leap 15.3:MozillaThunderbird-translations-common-91.4.1-8.48.1 openSUSE Leap 15.3:MozillaThunderbird-translations-other-91.4.1-8.48.1 openSUSE Leap 15.4:MozillaThunderbird-91.8.0-150200.8.65.1 openSUSE Leap 15.4:MozillaThunderbird-translations-common-91.8.0-150200.8.65.1 openSUSE Leap 15.4:MozillaThunderbird-translations-other-91.8.0-150200.8.65.1 openSUSE Tumbleweed:MozillaThunderbird-91.4.1-1.1 openSUSE Tumbleweed:MozillaThunderbird-translations-common-91.4.1-1.1 openSUSE Tumbleweed:MozillaThunderbird-translations-other-91.4.1-1.1 important 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N