Description
If a MIME email combines OpenPGP and OpenPGP MIME data in a certain way Thunderbird repeatedly attempts to process and display the message, which could cause Thunderbird's user interface to lock up and no longer respond to the user's actions. An attacker could send a crafted message with this structure to attempt a DoS attack. This vulnerability affects Thunderbird < 102.8.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Thunderbird | unspecified – < 102.8 | 102.8 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | thunderbird | 1:102.8.0-1 | — |
| Debian 13 | thunderbird | 1:102.8.0-1 | — |
| Debian 12 | thunderbird | 1:102.8.0-1 | — |
| Debian 11 | thunderbird | 1:102.8.0-1~deb11u1 | DSA-5355-1 |
| Debian 10 | thunderbird | 1:102.8.0-1~deb10u1 | DLA-3324-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | thunderbird | 1:102.8.0+build2-0ubuntu0.22.04.1 | USN-5943-1 |
| Ubuntu 20.04 LTS | thunderbird | 1:102.8.0+build2-0ubuntu0.20.04.1 | USN-5943-1 |
| Ubuntu 18.04 LTS | thunderbird | 1:102.8.0+build2-0ubuntu0.18.04.1 | USN-5943-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | thunderbird | 102.8.0-2.el9_1 | RHSA-2023:0824 |
| RHEL 8 | thunderbird | 102.8.0-2.el8_7 | RHSA-2023:0821 |
| RHEL 7 | thunderbird | 102.8.0-2.el7_9 | RHSA-2023:0817 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | thunderbird | 102.8.0-2.el9_0 | RHSA-2023:0823 |
| RHEL 8.6 EUS | thunderbird | 102.8.0-2.el8_6 | RHSA-2023:0822 |
| RHEL 8.4 EUS | thunderbird | 102.8.0-2.el8_4 | RHSA-2023:0820 |
| RHEL 8.2 TUS | thunderbird | 102.8.0-2.el8_2 | RHSA-2023:0819 |
| RHEL 8.2 E4S | thunderbird | 102.8.0-2.el8_2 | RHSA-2023:0819 |
| RHEL 8.2 AUS | thunderbird | 102.8.0-2.el8_2 | RHSA-2023:0819 |
| RHEL 8.1 E4S | thunderbird | 102.8.0-2.el8_1 | RHSA-2023:0818 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | thunderbird | 102.8.0-2.el9_1.alma | ALSA-2023:0824 |
| AlmaLinux 8 | thunderbird | 102.8.0-2.el8_7.alma | ALSA-2023:0821 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | thunderbird | 102.8.0-2.el9_1 | RLSA-2023:0824 |
| Rocky Linux 8 | thunderbird | 102.8.0-2.el8_7 | RLSA-2023:0821 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaThunderbird | 102.8.0-150200.8.105.2 | SUSE-SU-2023:0599-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaThunderbird | 102.8.0-1.1 | openSUSE-SU-2024:12713-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 102.8.0-150200.8.105.2 | SUSE-SU-2023:0599-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.8.0-1.amzn2.0.1 | ALAS2-2023-1983 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | thunderbird | 102.8.0-2.0.1.el9_1 | ELSA-2023-0824 |
| Oracle Linux 8 | thunderbird | 102.8.0-2.0.1.el8_7 | ELSA-2023-0821 |
| Oracle Linux 7 | thunderbird | 102.8.0-2.0.1.el7_9 | ELSA-2023-0817 |
Advisories 23
- ALSA-2023:0824 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:0821 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:0817 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-5943-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5355-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3324-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:0824 Important: thunderbird security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:0821 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2024:12713-1 MozillaThunderbird-102.8.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0599-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2023:0823 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0824 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0821 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0822 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0820 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0818 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0819 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- WID-SEC-2023-1424 Xerox FreeFlow Print Server für Solaris: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 6, 2025
- ALAS2-2023-1983 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Feb 15, 2024
- WID-SEC-2023-0407 Mozilla Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 29, 2023
- ELSA-2023-0817 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 21, 2023
- ELSA-2023-0824 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Feb 20, 2023
- ELSA-2023-0821 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 20, 2023