CVE-2020-6806
High
Description
By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Mozilla Firefox
PublishedMar 25, 2020
First seenMar 25, 2020
How to fix
Update
- mozilla firefox74.0 or later
- mozilla firefox_esr68.6.0 or later
- mozilla thunderbird68.6.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 74.0 | 74.0 |
| mozilla firefox_esr | v < 68.6.0 | 68.6.0 |
| mozilla thunderbird | v < 68.6.0 | 68.6.0 |
| canonical ubuntu_linux | 16.04, 18.04, 19.10 | — |
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