Description
After downloading a Windows <code>.url</code> shortcut from the local filesystem, an attacker could supply a remote path that would lead to unexpected network requests from the operating system. This also had the potential to leak NTLM credentials to the resource.<br>*This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 110 | 110 |
| Mozilla | Thunderbird | unspecified – < 102.8 | 102.8 |
| Mozilla | Firefox ESR | 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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 102.8.0-150200.152.78.1 | SUSE-SU-2023:0461-1 |
| SLES 15 SP4 | MozillaThunderbird | 102.8.0-150200.8.105.2 | SUSE-SU-2023:0599-1 |
| SLES 15 SP3 | MozillaFirefox | 102.8.0-150200.152.78.1 | SUSE-SU-2023:0461-1 |
| SLES 15 SP2 | MozillaFirefox | 102.8.0-150200.152.78.1 | SUSE-SU-2023:0461-1 |
| SLES 15 SP1 | MozillaFirefox | 102.8.0-150000.150.76.1 | SUSE-SU-2023:0469-1 |
| SLES 12 SP5 | MozillaFirefox | 102.8.0-112.150.1 | SUSE-SU-2023:0466-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | MozillaFirefox | 102.8.0-112.150.1 | SUSE-SU-2023:0466-1 |
| SLES 12 SP2 | MozillaFirefox | 102.8.0-112.150.1 | SUSE-SU-2023:0466-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 102.8.0-150200.152.78.1 | SUSE-SU-2023:0461-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 102.8.0-150200.152.78.1 | SUSE-SU-2023:0461-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 102.8.0-150000.150.76.1 | SUSE-SU-2023:0469-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 102.8.0-112.150.1 | SUSE-SU-2023:0466-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 102.8.0-112.150.1 | SUSE-SU-2023:0466-1 |
| SLE Real Time 15 SP3 | MozillaFirefox | 102.8.0-150200.152.78.1 | SUSE-SU-2023:0461-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 102.8.0-150200.152.78.1 | SUSE-SU-2023:0461-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 102.8.0-150200.152.78.1 | SUSE-SU-2023:0461-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 102.8.0-150000.150.76.1 | SUSE-SU-2023:0469-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 102.8.0-112.150.1 | SUSE-SU-2023:0466-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 102.8.0-112.150.1 | SUSE-SU-2023:0466-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 102.8.0-150200.152.78.1 | SUSE-SU-2023:0461-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 102.8.0-150200.152.78.1 | SUSE-SU-2023:0461-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 110.0.1-1.1 | openSUSE-SU-2024:12753-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 102.8.0-1.1 | openSUSE-SU-2024:12713-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 102.8.0-150200.152.78.1 | SUSE-SU-2023:0461-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 102.8.0-150200.8.105.2 | SUSE-SU-2023:0599-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 102.8.0-r0 | — |
| Alpine v3.22 | firefox-esr | 102.8.0-r0 | — |
| Alpine v3.21 | firefox-esr | 102.8.0-r0 | — |
| Alpine v3.20 | firefox-esr | 102.8.0-r0 | — |
| Alpine v3.19 | firefox-esr | 102.8.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 102.8.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.8.0-1.amzn2.0.1 | ALAS2-2023-1983 |
Advisories 11
- SUSE-SU-2023:0469-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0461-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12753-1 MozillaFirefox-110.0.1-1.1 on GA media SUSE / openSUSE Security Updates · 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-2023:0466-1 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
- SUSE-SU-2023:0599-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- 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-2023-0385 Mozilla Firefox: Mehrere Schwachstellen ermöglichen Codeausführung BSI CERT-Bund (WID) · Sep 27, 2023
- WID-SEC-2023-0407 Mozilla Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 29, 2023
References
- https://www.mozilla.org/security/advisories/mfsa2023-06/
- https://www.mozilla.org/security/advisories/mfsa2023-05/
- https://www.mozilla.org/security/advisories/mfsa2023-07/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1809923
- https://bugzilla.mozilla.org/show_bug.cgi?id=1784451
- https://bugzilla.mozilla.org/show_bug.cgi?id=1810143
- https://bugzilla.mozilla.org/show_bug.cgi?id=1812338