Description
Thunderbird allowed the Text Direction Override Unicode Character in filenames. An email attachment could be incorrectly shown as being a document file, while in fact it was an executable file. Newer versions of Thunderbird will strip the character and show the correct file extension. This vulnerability affects Thunderbird < 115.0.1 and Thunderbird < 102.13.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Thunderbird | unspecified – < 115.0.1, unspecified – < 102.13.1 | 115.0.1 |
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 | 1:102.13.1-1 | — |
| Debian 13 | thunderbird | 1:102.13.1-1 | — |
| Debian 12 | thunderbird | 1:102.13.1-1~deb12u1 | DSA-5463-1 |
| Debian 11 | thunderbird | 1:102.13.1-1~deb11u1 | DSA-5463-1 |
| Debian 10 | thunderbird | 1:102.13.1-1~deb10u1 | DLA-3510-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | thunderbird | 1:102.15.0+build1-0ubuntu0.22.04.1 | USN-6333-1 |
| Ubuntu 20.04 LTS | thunderbird | 1:102.15.0+build1-0ubuntu0.20.04.1 | USN-6333-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | thunderbird | 102.14.0-1.el9_2 | RHSA-2023:4499 |
| RHEL 8 | thunderbird | 102.14.0-1.el8_8 | RHSA-2023:4497 |
| RHEL 7 | thunderbird | 102.14.0-1.el7_9 | RHSA-2023:4495 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | thunderbird | 102.14.0-1.el9_0 | RHSA-2023:4494 |
| RHEL 8.6 EUS | thunderbird | 102.14.0-1.el8_6 | RHSA-2023:4493 |
| RHEL 8.4 TUS | thunderbird | 102.14.0-1.el8_4 | RHSA-2023:4500 |
| RHEL 8.4 E4S | thunderbird | 102.14.0-1.el8_4 | RHSA-2023:4500 |
| RHEL 8.4 AUS | thunderbird | 102.14.0-1.el8_4 | RHSA-2023:4500 |
| RHEL 8.2 TUS | thunderbird | 102.14.0-1.el8_2 | RHSA-2023:4496 |
| RHEL 8.2 E4S | thunderbird | 102.14.0-1.el8_2 | RHSA-2023:4496 |
| RHEL 8.2 AUS | thunderbird | 102.14.0-1.el8_2 | RHSA-2023:4496 |
| RHEL 8.1 E4S | thunderbird | 102.14.0-1.el8_1 | RHSA-2023:4492 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | thunderbird | 102.14.0-1.el9_2.alma | ALSA-2023:4499 |
| AlmaLinux 8 | thunderbird | 102.14.0-1.el8_8.alma | ALSA-2023:4497 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | thunderbird | 102.14.0-1.el9_2 | RLSA-2023:4499 |
| Rocky Linux 8 | thunderbird | 102.14.0-1.el8_8 | RLSA-2023:4497 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | MozillaThunderbird | 115.0.1-150200.8.124.1 | SUSE-SU-2023:3059-1 |
| SLES 15 SP4 | MozillaThunderbird | 115.0.1-150200.8.124.1 | SUSE-SU-2023:3059-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaThunderbird | 102.13.1-1.1 | openSUSE-SU-2024:13072-1 |
| openSUSE Leap 15.5 | MozillaThunderbird | 115.0.1-150200.8.124.1 | SUSE-SU-2023:3059-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 115.0.1-150200.8.124.1 | SUSE-SU-2023:3059-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.15.0-1.amzn2.0.1 | ALAS2-2023-2248 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | thunderbird | 102.14.0-1.0.1.el9_2 | ELSA-2023-4499 |
| Oracle Linux 8 | thunderbird | 102.14.0-1.0.1.el8_8 | ELSA-2023-4497 |
| Oracle Linux 7 | thunderbird | 102.14.0-1.0.1.el7_9 | ELSA-2023-4495 |
Advisories 22
- ALSA-2023:4499 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:4497 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:4500 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4499 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4497 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4495 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4496 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4493 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4494 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:4492 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-6333-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5463-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3510-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:4497 Important: thunderbird security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:4499 Important: thunderbird security update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2023:3059-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13072-1 MozillaThunderbird-102.13.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-1866 Mozilla Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 18, 2024
- ALAS2-2023-2248 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 20, 2023
- ELSA-2023-4497 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 9, 2023
- ELSA-2023-4499 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 8, 2023
- ELSA-2023-4495 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 8, 2023