Description
ASN.1 parsing of an indefinite SEQUENCE inside an indefinite GROUP could have resulted in the parser accepting malformed ASN.1. This vulnerability affects Firefox < 102.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 102 | 102 |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | firefox | 102.0+build2-0ubuntu0.20.04.1 | USN-5504-1 |
| Ubuntu 18.04 LTS | firefox | 102.0+build2-0ubuntu0.18.04.1 | USN-5504-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 102.3.0-150200.152.61.1 | SUSE-SU-2022:3396-1 |
| SLES 15 SP4 | MozillaFirefox-branding-SLE | 102-150200.9.10.1 | SUSE-SU-2022:3396-1 |
| SLES 15 SP3 | MozillaFirefox | 102.3.0-150200.152.61.1 | SUSE-SU-2022:3396-1 |
| SLES 15 SP3 | MozillaFirefox-branding-SLE | 102-150200.9.10.1 | SUSE-SU-2022:3396-1 |
| SLES 15 SP2 | MozillaFirefox | 102.3.0-150200.152.61.1 | SUSE-SU-2022:3396-1 |
| SLES 15 SP2 | MozillaFirefox-branding-SLE | 102-150200.9.10.1 | SUSE-SU-2022:3396-1 |
| SLES 15 SP1 | MozillaFirefox | 102.2.0-150000.150.56.1 | SUSE-SU-2022:3272-1 |
| SLES 15 SP1 | MozillaFirefox-branding-SLE | 102-150000.4.22.1 | SUSE-SU-2022:3272-1 |
| SLES 15 | MozillaFirefox | 102.2.0-150000.150.56.1 | SUSE-SU-2022:3272-1 |
| SLES 15 | MozillaFirefox-branding-SLE | 102-150000.4.22.1 | SUSE-SU-2022:3272-1 |
Show 19 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 102.2.0-112.130.1 | SUSE-SU-2022:3273-1 |
| SLES 12 SP5 | MozillaFirefox-branding-SLE | 102-35.9.1 | SUSE-SU-2022:3273-1 |
| SLES 12 SP4 | MozillaFirefox | 102.2.0-112.130.1 | SUSE-SU-2022:3273-1 |
| SLES 12 SP4 | MozillaFirefox-branding-SLE | 102-35.9.1 | SUSE-SU-2022:3273-1 |
| SLES 12 SP3 | MozillaFirefox | 102.2.0-112.130.1 | SUSE-SU-2022:3273-1 |
| SLES 12 SP3 | MozillaFirefox-branding-SLE | 102-35.9.1 | SUSE-SU-2022:3273-1 |
| SLES 12 SP2 | MozillaFirefox | 102.2.0-112.130.1 | SUSE-SU-2022:3273-1 |
| SLES 12 SP2 | MozillaFirefox-branding-SLE | 102-35.9.1 | SUSE-SU-2022:3273-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 102.3.0-150200.152.61.1 | SUSE-SU-2022:3396-1 |
| SLES for SAP 15 SP2 | MozillaFirefox-branding-SLE | 102-150200.9.10.1 | SUSE-SU-2022:3396-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 102.2.0-150000.150.56.1 | SUSE-SU-2022:3272-1 |
| SLES for SAP 15 SP1 | MozillaFirefox-branding-SLE | 102-150000.4.22.1 | SUSE-SU-2022:3272-1 |
| SLES for SAP 15 | MozillaFirefox | 102.2.0-150000.150.56.1 | SUSE-SU-2022:3272-1 |
| SLES for SAP 15 | MozillaFirefox-branding-SLE | 102-150000.4.22.1 | SUSE-SU-2022:3272-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 102.2.0-112.130.1 | SUSE-SU-2022:3273-1 |
| SLES for SAP 12 SP5 | MozillaFirefox-branding-SLE | 102-35.9.1 | SUSE-SU-2022:3273-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 102.2.0-112.130.1 | SUSE-SU-2022:3273-1 |
| SLES for SAP 12 SP4 | MozillaFirefox-branding-SLE | 102-35.9.1 | SUSE-SU-2022:3273-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 102.3.0-150200.152.61.1 | SUSE-SU-2022:3396-1 |
| SLE HPC 15 SP2 | MozillaFirefox-branding-SLE | 102-150200.9.10.1 | SUSE-SU-2022:3396-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 102.2.0-150000.150.56.1 | SUSE-SU-2022:3272-1 |
| SLE HPC 15 SP1 | MozillaFirefox-branding-SLE | 102-150000.4.22.1 | SUSE-SU-2022:3272-1 |
| SLE HPC 15 | MozillaFirefox | 102.2.0-150000.150.56.1 | SUSE-SU-2022:3272-1 |
| SLE HPC 15 | MozillaFirefox-branding-SLE | 102-150000.4.22.1 | SUSE-SU-2022:3272-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 102.2.0-112.130.1 | SUSE-SU-2022:3273-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox-branding-SLE | 102-35.9.1 | SUSE-SU-2022:3273-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 102.2.0-112.130.1 | SUSE-SU-2022:3273-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox-branding-SLE | 102-35.9.1 | SUSE-SU-2022:3273-1 |
| SUSE Manager Server 4.1 | MozillaFirefox | 102.3.0-150200.152.61.1 | SUSE-SU-2022:3396-1 |
| SUSE Manager Server 4.1 | MozillaFirefox-branding-SLE | 102-150200.9.10.1 | SUSE-SU-2022:3396-1 |
| SUSE Manager Retail Branch Server 4.1 | MozillaFirefox | 102.3.0-150200.152.61.1 | SUSE-SU-2022:3396-1 |
| SUSE Manager Retail Branch Server 4.1 | MozillaFirefox-branding-SLE | 102-150200.9.10.1 | SUSE-SU-2022:3396-1 |
| SUSE Manager Proxy 4.1 | MozillaFirefox | 102.3.0-150200.152.61.1 | SUSE-SU-2022:3396-1 |
| SUSE Manager Proxy 4.1 | MozillaFirefox-branding-SLE | 102-150200.9.10.1 | SUSE-SU-2022:3396-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 102.3.0-150200.152.61.1 | SUSE-SU-2022:3396-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox-branding-SLE | 102-150200.9.10.1 | SUSE-SU-2022:3396-1 |
| SUSE Enterprise Storage 6 | MozillaFirefox | 102.2.0-150000.150.56.1 | SUSE-SU-2022:3272-1 |
| SUSE Enterprise Storage 6 | MozillaFirefox-branding-SLE | 102-150000.4.22.1 | SUSE-SU-2022:3272-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 102.0.1-1.1 | openSUSE-SU-2024:12184-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 102.3.0-150200.152.61.1 | SUSE-SU-2022:3396-1 |
| openSUSE Leap 15.4 | MozillaFirefox-branding-SLE | 102-150200.9.10.1 | SUSE-SU-2022:3396-1 |
| openSUSE Leap 15.3 | MozillaFirefox | 102.3.0-150200.152.61.1 | SUSE-SU-2022:3396-1 |
| openSUSE Leap 15.3 | MozillaFirefox-branding-SLE | 102-150200.9.10.1 | SUSE-SU-2022:3396-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | librewolf | 102.0-r0 | — |
| Alpine v3.23 | firefox +1 | 102.0-r0 | — |
| Alpine v3.22 | firefox +1 | 102.0-r0 | — |
| Alpine v3.21 | firefox +1 | 102.0-r0 | — |
| Alpine v3.20 | firefox | 102.0-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | firefox | 102.0-r0 | — |
| Alpine v3.18 | firefox | 102.0-r0 | — |
| Alpine v3.17 | firefox | 102.0-r0 | — |
Advisories 7
- USN-5504-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2022:3273-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3396-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12184-1 MozillaFirefox-102.0.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3272-1 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
- WID-SEC-2022-0505 Mozilla Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 27, 2023