CVE-2020-15659
High
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firefox ESR 78.0. 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 < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Mozilla Firefox
PublishedAug 10, 2020
First seenAug 10, 2020
How to fix
Update
- mozilla firefox79.0 or later
- mozilla firefox_esr68.11, 78.1.0 or later
- mozilla thunderbird68.11, 78.1.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 79.0 | 79.0 |
| mozilla firefox_esr | v < 68.11, 78.0 ≤ v < 78.1.0 | 68.11, 78.1.0 |
| mozilla thunderbird | v < 68.11, 78.0.1 ≤ v < 78.1.0 | 68.11, 78.1.0 |
| opensuse leap | 15.1, 15.2 | — |
| canonical ubuntu_linux | 16.04, 18.04, 20.04 | — |
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