firefox: By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions throug...
CVE-2018-12395 is fixed in 4 products on 1 platform, first by firefox 63.0+build2-0ubuntu0.18.04.2, released October 23, 2018. It is not reported as exploited. Patch Radar priority: Routine.
By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are otherwise restricted. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| firefox · Ubuntu 18.04.6 LTS (bionic) | 63.0+build2-0ubuntu0.18.04.2 | firefox 63.0+build2-0ubuntu0.18.04.2 | Oct 23, 2018 |
| firefox-globalmenu · Ubuntu 18.04.6 LTS (bionic) | 63.0+build2-0ubuntu0.18.04.2 | firefox-globalmenu 63.0+build2-0ubuntu0.18.04.2 | Oct 23, 2018 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 63.0+build2-0ubuntu0.18.04.2 | firefox-mozsymbols 63.0+build2-0ubuntu0.18.04.2 | Oct 23, 2018 |
| firefox-testsuite · Ubuntu 18.04.6 LTS (bionic) | 63.0+build2-0ubuntu0.18.04.2 | firefox-testsuite 63.0+build2-0ubuntu0.18.04.2 | Oct 23, 2018 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.