Firefox ESR and 1 other: Mozilla developers reported memory safety bugs present in Firefox 86.
CVE-2021-23988 is fixed in 4 products on 2 platforms, first by firefox 87.0+build3-0ubuntu0.20.04.2, released March 24, 2021. It is not reported as exploited. Patch Radar priority: High.
Mozilla developers reported memory safety bugs present in Firefox 86. 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 Firefox < 87.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox ESR (en-US) | 91.0 | Mozilla Firefox ESR (en-US) 91.0 | Aug 4, 2021 |
| Linux | |||
| firefox · Ubuntu 18.04.6 LTS (bionic) | 87.0+build3-0ubuntu0.18.04.2 | firefox 87.0+build3-0ubuntu0.18.04.2 | Jun 24, 2021 |
| firefox · Ubuntu 20.04 LTS (focal) | 87.0+build3-0ubuntu0.20.04.2 | firefox 87.0+build3-0ubuntu0.20.04.2 | Mar 24, 2021 |
| firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) | 87.0+build3-0ubuntu0.18.04.2 | firefox-geckodriver 87.0+build3-0ubuntu0.18.04.2 | Jun 24, 2021 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 87.0+build3-0ubuntu0.20.04.2 | firefox-geckodriver 87.0+build3-0ubuntu0.20.04.2 | Mar 24, 2021 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 87.0+build3-0ubuntu0.18.04.2 | firefox-mozsymbols 87.0+build3-0ubuntu0.18.04.2 | Jun 24, 2021 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 87.0+build3-0ubuntu0.20.04.2 | firefox-mozsymbols 87.0+build3-0ubuntu0.20.04.2 | Mar 24, 2021 |
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.