Description
A file with a long filename could have had its filename truncated to remove the valid extension, leaving a malicious extension in its place. This could potentially led to user confusion and the execution of malicious code.<br/>*Note*: This issue was originally included in the advisories for Thunderbird 102.6, but a patch (specific to Thunderbird) was omitted, resulting in it actually being fixed in Thunderbird 102.6.1. This vulnerability affects Firefox < 108, Thunderbird < 102.6.1, Thunderbird < 102.6, and Firefox ESR < 102.6.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 108 | 108 |
| Mozilla | Thunderbird | unspecified – < 102.6.1, unspecified – < 102.6 | 102.6.1 |
| Mozilla | Firefox ESR | unspecified – < 102.6 | 102.6 |
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 | firefox-esr | 102.6.0esr-1 | — |
| Debian 14 | thunderbird | 1:102.6.0-1 | — |
| Debian 13 | firefox-esr | 102.6.0esr-1 | — |
| Debian 13 | thunderbird | 1:102.6.0-1 | — |
| Debian 12 | firefox-esr | 102.6.0esr-1 | — |
| Debian 12 | thunderbird | 1:102.6.0-1 | — |
| Debian 11 | firefox-esr | 102.6.0esr-1~deb11u1 | DSA-5301-1 |
| Debian 11 | thunderbird | 1:102.6.0-1~deb11u1 | DSA-5303-1 |
| Debian 10 | firefox-esr | 102.6.0esr-1~deb10u1 | DLA-3241-1 |
| Debian 10 | thunderbird | 1:102.6.0-1~deb10u1 | DLA-3242-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | mozjs78 +1 | No fix yet | — |
| Ubuntu 22.04 LTS | thunderbird | 1:102.7.1+build2-0ubuntu0.22.04.1 | USN-5824-1 |
| Ubuntu 20.04 LTS | firefox | 108.0+build2-0ubuntu0.20.04.1 | USN-5782-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:102.7.1+build2-0ubuntu0.20.04.1 | USN-5824-1 |
| Ubuntu 18.04 LTS | firefox | 108.0+build2-0ubuntu0.18.04.1 | USN-5782-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | thunderbird | 1:102.7.1+build2-0ubuntu0.18.04.1 | USN-5824-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox | 102.6.0-1.el9_1 | RHSA-2022:9065 |
| RHEL 9 | thunderbird | 102.6.0-2.el9_1 | RHSA-2022:9080 |
| RHEL 8 | firefox | 102.6.0-1.el8_7 | RHSA-2022:9067 |
| RHEL 8 | thunderbird | 102.6.0-2.el8_7 | RHSA-2022:9074 |
| RHEL 7 | firefox | 102.6.0-1.el7_9 | RHSA-2022:9072 |
| RHEL 7 | thunderbird | 102.6.0-2.el7_9 | RHSA-2022:9079 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | firefox | 102.6.0-1.el9_0 | RHSA-2022:9066 |
| RHEL 9.0 EUS | thunderbird | 102.6.0-2.el9_0 | RHSA-2022:9081 |
| RHEL 8.6 EUS | firefox | 102.6.0-1.el8_6 | RHSA-2022:9068 |
| RHEL 8.6 EUS | thunderbird | 102.6.0-2.el8_6 | RHSA-2022:9078 |
| RHEL 8.4 EUS | firefox | 102.6.0-1.el8_4 | RHSA-2022:9069 |
| RHEL 8.4 EUS | thunderbird | 102.6.0-2.el8_4 | RHSA-2022:9075 |
| RHEL 8.2 TUS | firefox | 102.6.0-1.el8_2 | RHSA-2022:9070 |
| RHEL 8.2 TUS | thunderbird | 102.6.0-2.el8_2 | RHSA-2022:9076 |
| RHEL 8.2 E4S | firefox | 102.6.0-1.el8_2 | RHSA-2022:9070 |
| RHEL 8.2 E4S | thunderbird | 102.6.0-2.el8_2 | RHSA-2022:9076 |
| RHEL 8.2 AUS | firefox | 102.6.0-1.el8_2 | RHSA-2022:9070 |
| RHEL 8.2 AUS | thunderbird | 102.6.0-2.el8_2 | RHSA-2022:9076 |
| RHEL 8.1 E4S | firefox | 102.6.0-1.el8_1 | RHSA-2022:9071 |
| RHEL 8.1 E4S | thunderbird | 102.6.0-2.el8_1 | RHSA-2022:9077 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox | 102.6.0-1.el9_1.alma | ALSA-2022:9065 |
| AlmaLinux 9 | thunderbird | 102.6.0-2.el9_1.alma | ALSA-2022:9080 |
| AlmaLinux 8 | firefox | 102.6.0-1.el8_7.alma | ALSA-2022:9067 |
| AlmaLinux 8 | thunderbird | 102.6.0-2.el8_7.alma | ALSA-2022:9074 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | firefox | 102.6.0-1.el8_7 | RLSA-2022:9067 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 102.6.0-150200.152.70.1 | SUSE-SU-2022:4462-1 |
| SLES 15 SP4 | MozillaThunderbird | 102.6.0-150200.8.96.1 | SUSE-SU-2022:4636-1, SUSE-SU-2022:4579-1 |
| SLES 15 SP3 | MozillaFirefox | 102.6.0-150200.152.70.1 | SUSE-SU-2022:4462-1 |
| SLES 15 SP2 | MozillaFirefox | 102.6.0-150200.152.70.1 | SUSE-SU-2022:4462-1 |
| SLES 15 SP1 | MozillaFirefox | 102.6.0-150000.150.68.1 | SUSE-SU-2022:4461-1 |
| SLES 15 | MozillaFirefox | 102.6.0-150000.150.68.1 | SUSE-SU-2022:4461-1 |
Show 19 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 102.6.0-112.142.1 | SUSE-SU-2022:4460-1 |
| SLES 12 SP4 | MozillaFirefox | 102.6.0-112.142.1 | SUSE-SU-2022:4460-1 |
| SLES 12 SP3 | MozillaFirefox | 102.6.0-112.142.1 | SUSE-SU-2022:4460-1 |
| SLES 12 SP2 | MozillaFirefox | 102.6.0-112.142.1 | SUSE-SU-2022:4460-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 102.6.0-150200.152.70.1 | SUSE-SU-2022:4462-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 102.6.0-150000.150.68.1 | SUSE-SU-2022:4461-1 |
| SLES for SAP 15 | MozillaFirefox | 102.6.0-150000.150.68.1 | SUSE-SU-2022:4461-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 102.6.0-112.142.1 | SUSE-SU-2022:4460-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 102.6.0-112.142.1 | SUSE-SU-2022:4460-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 102.6.0-150200.152.70.1 | SUSE-SU-2022:4462-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 102.6.0-150000.150.68.1 | SUSE-SU-2022:4461-1 |
| SLE HPC 15 | MozillaFirefox | 102.6.0-150000.150.68.1 | SUSE-SU-2022:4461-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 102.6.0-112.142.1 | SUSE-SU-2022:4460-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 102.6.0-112.142.1 | SUSE-SU-2022:4460-1 |
| SUSE Manager Server 4.1 | MozillaFirefox | 102.6.0-150200.152.70.1 | SUSE-SU-2022:4462-1 |
| SUSE Manager Retail Branch Server 4.1 | MozillaFirefox | 102.6.0-150200.152.70.1 | SUSE-SU-2022:4462-1 |
| SUSE Manager Proxy 4.1 | MozillaFirefox | 102.6.0-150200.152.70.1 | SUSE-SU-2022:4462-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 102.6.0-150200.152.70.1 | SUSE-SU-2022:4462-1 |
| SUSE Enterprise Storage 6 | MozillaFirefox | 102.6.0-150000.150.68.1 | SUSE-SU-2022:4461-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 108.0.1-1.1 | openSUSE-SU-2024:12577-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 102.6.0-1.1 | openSUSE-SU-2024:12571-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 102.6.0-150200.152.70.1 | SUSE-SU-2022:4462-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 102.6.0-150200.8.96.1 | SUSE-SU-2022:4636-1, SUSE-SU-2022:4579-1 |
| openSUSE Leap 15.3 | MozillaFirefox | 102.6.0-150200.152.70.1 | SUSE-SU-2022:4462-1 |
| openSUSE Leap 15.3 | MozillaThunderbird | 102.6.0-150200.8.96.1 | SUSE-SU-2022:4579-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 102.6.0-r0 | — |
| Alpine v3.22 | firefox-esr | 102.6.0-r0 | — |
| Alpine v3.21 | firefox-esr | 102.6.0-r0 | — |
| Alpine v3.20 | firefox-esr | 102.6.0-r0 | — |
| Alpine v3.19 | firefox-esr | 102.6.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 102.6.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.7.1-1.amzn2.0.1 | ALAS2-2023-1951 |
Advisories 39
- ALSA-2022:9080 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2022:9065 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2022:9067 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2022:9074 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:9079 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2022:9072 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-5824-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-5782-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-5301-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5303-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3241-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3242-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:9067 Important: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2024:12577-1 MozillaFirefox-108.0.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4579-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12571-1 MozillaThunderbird-102.6.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4462-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4460-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4461-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2022:9081 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9080 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9078 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9077 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9075 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9076 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9074 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9070 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9071 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9068 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9069 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9067 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9065 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:9066 Red Hat Security Advisory: firefox 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
- SUSE-SU-2022:4636-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2023-1951 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jan 30, 2025
- WID-SEC-2022-2319 Mozilla Firefox und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 27, 2023
- WID-SEC-2023-0561 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 18, 2023
References
- https://www.mozilla.org/security/advisories/mfsa2022-52/
- https://www.mozilla.org/security/advisories/mfsa2022-53/
- https://www.mozilla.org/security/advisories/mfsa2022-51/
- https://www.mozilla.org/security/advisories/mfsa2022-54/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1746139
- GLSA-202305-06 vendor-advisory
- GLSA-202305-13 vendor-advisory