Mozilla Firefox and 2 others: When choosing a site-isolated process for a document loaded from a data: URL that was the result of a…
CVE-2023-34415 is fixed in 5 products on 2 platforms, first by firefox 114.0+build3-0ubuntu0.20.04.1, released June 6, 2023. It is not reported as exploited. Patch Radar priority: Routine.
When choosing a site-isolated process for a document loaded from a data: URL that was the result of a redirect, Firefox would load that document in the same process as the site that issued the redirect. This bypassed the site-isolation protections against Spectre-like attacks on sites that host an "open redirect". Firefox no longer follows HTTP redirects to data: URLs. This vulnerability affects Firefox < 114.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox (en-US) | 114.0.1 | Mozilla Firefox (en-US) 114.0.1 | Jun 12, 2023 |
| Mozilla Firefox ESR (en-US) | 115.4.0 | Mozilla Firefox ESR (en-US) 115.4.0 | Oct 17, 2023 |
| Linux | |||
| firefox · Ubuntu 20.04 LTS (focal) | 114.0+build3-0ubuntu0.20.04.1 | firefox 114.0+build3-0ubuntu0.20.04.1 | Jun 6, 2023 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 114.0+build3-0ubuntu0.20.04.1 | firefox-geckodriver 114.0+build3-0ubuntu0.20.04.1 | Jun 6, 2023 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 114.0+build3-0ubuntu0.20.04.1 | firefox-mozsymbols 114.0+build3-0ubuntu0.20.04.1 | Jun 6, 2023 |
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.