Firefox ESR: Mozilla developers reported memory safety bugs present in Firefox 76.
CVE-2020-12411 is fixed in 4 products on 2 platforms, first by firefox 77.0.1+build1-0ubuntu0.18.04.1, released June 2, 2020. It is not reported as exploited. Patch Radar priority: High.
Mozilla developers reported memory safety bugs present in Firefox 76. 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 < 77.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox ESR (en-US) | 78.0esr | Mozilla Firefox ESR (en-US) 78.0esr | Jun 25, 2020 |
| Linux | |||
| firefox · Ubuntu 18.04.6 LTS (bionic) | 77.0.1+build1-0ubuntu0.18.04.1 | firefox 77.0.1+build1-0ubuntu0.18.04.1 | Jun 2, 2020 |
| firefox · Ubuntu 20.04 LTS (focal) | 77.0.1+build1-0ubuntu0.20.04.1 | firefox 77.0.1+build1-0ubuntu0.20.04.1 | Jun 2, 2020 |
| firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) | 77.0.1+build1-0ubuntu0.18.04.1 | firefox-geckodriver 77.0.1+build1-0ubuntu0.18.04.1 | Jun 2, 2020 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 77.0.1+build1-0ubuntu0.20.04.1 | firefox-geckodriver 77.0.1+build1-0ubuntu0.20.04.1 | Jun 2, 2020 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 77.0.1+build1-0ubuntu0.18.04.1 | firefox-mozsymbols 77.0.1+build1-0ubuntu0.18.04.1 | Jun 2, 2020 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 77.0.1+build1-0ubuntu0.20.04.1 | firefox-mozsymbols 77.0.1+build1-0ubuntu0.20.04.1 | Jun 2, 2020 |
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