Firefox ESR and 1 other: Mozilla developers reported memory safety bugs present in Firefox 81.
CVE-2020-15684 is fixed in 4 products on 2 platforms, first by firefox 82.0+build2-0ubuntu0.18.04.1, released October 21, 2020. It is not reported as exploited. Patch Radar priority: High.
Mozilla developers reported memory safety bugs present in Firefox 81. 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 < 82.
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) | 82.0+build2-0ubuntu0.18.04.1 | firefox 82.0+build2-0ubuntu0.18.04.1 | Oct 21, 2020 |
| firefox · Ubuntu 20.04 LTS (focal) | 82.0+build2-0ubuntu0.20.04.1 | firefox 82.0+build2-0ubuntu0.20.04.1 | Oct 21, 2020 |
| firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) | 82.0+build2-0ubuntu0.18.04.1 | firefox-geckodriver 82.0+build2-0ubuntu0.18.04.1 | Oct 21, 2020 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 82.0+build2-0ubuntu0.20.04.1 | firefox-geckodriver 82.0+build2-0ubuntu0.20.04.1 | Oct 21, 2020 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 82.0+build2-0ubuntu0.18.04.1 | firefox-mozsymbols 82.0+build2-0ubuntu0.18.04.1 | Oct 21, 2020 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 82.0+build2-0ubuntu0.20.04.1 | firefox-mozsymbols 82.0+build2-0ubuntu0.20.04.1 | Oct 21, 2020 |
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