CVE-2020-12421
Medium
Description
When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Mozilla Firefox
PublishedJul 9, 2020
First seenJul 9, 2020
How to fix
Update
- mozilla firefox78.0 or later
- mozilla firefox_esr68.10.0 or later
- mozilla thunderbird68.10.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 78.0 | 78.0 |
| mozilla firefox_esr | v < 68.10.0 | 68.10.0 |
| mozilla thunderbird | v < 68.10.0 | 68.10.0 |
| canonical ubuntu_linux | 16.04, 18.04, 19.10, 20.04 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.