Description
When a malicious application installed on the user's device broadcast an Intent to Firefox for Android, arbitrary headers could have been specified, leading to attacks such as abusing ambient authority or session fixation. This was resolved by only allowing certain safe-listed headers. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 84.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 84 | 84 |
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.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 92.0-1.2 | openSUSE-SU-2024:10600-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | librewolf | 84.0.1-r0 | — |
| Alpine v3.23 | firefox +1 | 84.0.1-r0 | — |
| Alpine v3.22 | firefox +1 | 84.0.1-r0 | — |
| Alpine v3.21 | firefox +1 | 84.0.1-r0 | — |
| Alpine v3.20 | firefox | 84.0.1-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | firefox | 84.0.1-r0 | — |
| Alpine v3.18 | firefox | 84.0.1-r0 | — |
| Alpine v3.17 | firefox | 84.0.1-r0 | — |
| Alpine v3.16 | firefox | 84.0.1-r0 | — |
| Alpine v3.15 | firefox | 84.0.1-r0 | — |
| Alpine v3.14 | firefox | 84.0.1-r0 | — |
| Alpine v3.13 | firefox | 84.0.1-r0 | — |
| Alpine v3.12 | firefox | 84.0.1-r0 | — |
Advisories 2
- openSUSE-SU-2024:10600-1 MozillaFirefox-92.0-1.2 on GA media 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