Description
Memory safety bugs present in Firefox ESR 102.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 102.8 and Firefox ESR < 102.8.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| 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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | firefox-esr | 102.8.0esr-1 | — |
| Debian 14 | thunderbird | 1:102.8.0-1 | — |
| Debian 13 | firefox-esr | 102.8.0esr-1 | — |
| Debian 13 | thunderbird | 1:102.8.0-1 | — |
| Debian 12 | firefox-esr | 102.8.0esr-1 | — |
| Debian 12 | thunderbird | 1:102.8.0-1 | — |
| Debian 11 | firefox-esr | 102.8.0esr-1~deb11u1 | DSA-5350-1 |
| Debian 11 | thunderbird | 1:102.8.0-1~deb11u1 | DSA-5355-1 |
| Debian 10 | firefox-esr | 102.8.0esr-1~deb10u1 | DLA-3319-1 |
| 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 | firefox +2 | 102.8.0-2.el9_1 | RHSA-2023:0824, RHSA-2023:0810 |
| RHEL 8 | firefox +1 | 102.8.0-2.el8_7 | RHSA-2023:0821, RHSA-2023:0808 |
| RHEL 7 | firefox +1 | 102.8.0-2.el7_9 | RHSA-2023:0817, RHSA-2023:0812 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | firefox +1 | 102.8.0-2.el9_0 | RHSA-2023:0823, RHSA-2023:0809 |
| RHEL 8.6 EUS | firefox +1 | 102.8.0-2.el8_6 | RHSA-2023:0822, RHSA-2023:0807 |
| RHEL 8.4 EUS | firefox +1 | 102.8.0-2.el8_4 | RHSA-2023:0820, RHSA-2023:0805 |
| RHEL 8.2 TUS | firefox +1 | 102.8.0-2.el8_2 | RHSA-2023:0819, RHSA-2023:0811 |
| RHEL 8.2 E4S | firefox +1 | 102.8.0-2.el8_2 | RHSA-2023:0819, RHSA-2023:0811 |
| RHEL 8.2 AUS | firefox +1 | 102.8.0-2.el8_2 | RHSA-2023:0819, RHSA-2023:0811 |
| RHEL 8.1 E4S | firefox +1 | 102.8.0-2.el8_1 | RHSA-2023:0818, RHSA-2023:0806 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox +2 | 102.8.0-2.el9_1.alma | ALSA-2023:0824, ALSA-2023:0810 |
| AlmaLinux 8 | firefox +1 | 102.8.0-2.el8_7.alma | ALSA-2023:0821, ALSA-2023:0808 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | firefox +1 | 102.8.0-2.el9_1 | RLSA-2023:0824, RLSA-2023:0810 |
| Rocky Linux 8 | firefox +1 | 102.8.0-2.el8_7 | RLSA-2023:0821, RLSA-2023:0808 |
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 | MozillaThunderbird | 102.8.0-1.1 | openSUSE-SU-2024:12713-1 |
| 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 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +2 | 102.8.0-2.0.1.el9_1 | ELSA-2023-0824, ELSA-2023-0810 |
| Oracle Linux 8 | firefox +1 | 102.8.0-2.0.1.el8_7 | ELSA-2023-0821, ELSA-2023-0808 |
| Oracle Linux 7 | firefox +1 | 102.8.0-2.0.1.el7_9 | ELSA-2023-0817, ELSA-2023-0812 |
Advisories 44
- ALSA-2023:0824 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:0810 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:0808 Important: firefox 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
- RHSA-2023:0812 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-5943-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5350-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5355-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3319-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3324-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:0810 Important: firefox security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:0824 Important: thunderbird security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:0808 Important: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2023:0821 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- 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-2024:12713-1 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
- 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
- RHSA-2023:0811 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0809 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0810 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0808 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0806 Red Hat Security Advisory: Mozilla Firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0807 Red Hat Security Advisory: Mozilla Firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0805 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
- 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
- ELSA-2023-0812 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 21, 2023
- ELSA-2023-0817 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 21, 2023
- ELSA-2023-0810 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Feb 20, 2023
- ELSA-2023-0808 Important: firefox security update (Oracle Linux 8) 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
- ELSA-2023-0824 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Feb 20, 2023