CVE-2019-9801
Medium
Description
Firefox will accept any registered Program ID as an external protocol handler and offer to launch this local application when given a matching URL on Windows operating systems. This should only happen if the program has specifically registered itself as a "URL Handler" in the Windows registry. *Note: This issue only affects Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Mozilla Firefox
PublishedApr 26, 2019
First seenApr 26, 2019
How to fix
Update
- mozilla firefox66.0 or later
- mozilla firefox_esr60.6 or later
- mozilla thunderbird60.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 66.0 | 66.0 |
| mozilla firefox_esr | v < 60.6 | 60.6 |
| mozilla thunderbird | v < 60.6 | 60.6 |
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