CVE-2020-12406
High
Description
Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Mozilla Firefox
PublishedJul 9, 2020
First seenJul 9, 2020
How to fix
Update
- mozilla firefox77.0 or later
- mozilla firefox_esr68.9.0 or later
- mozilla thunderbird68.9.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 77.0 | 77.0 |
| mozilla firefox_esr | v < 68.9.0 | 68.9.0 |
| mozilla thunderbird | v < 68.9.0 | 68.9.0 |
| canonical ubuntu_linux | 16.04, 18.04, 19.10, 20.04 | — |
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