CVE-2021-23968
Medium
Description
If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Mozilla Firefox
PublishedFeb 26, 2021
First seenFeb 26, 2021
How to fix
Update
- mozilla firefox86.0 or later
- mozilla firefox_esr78.8 or later
- mozilla thunderbird78.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 86.0 | 86.0 |
| mozilla firefox_esr | v < 78.8 | 78.8 |
| mozilla thunderbird | v < 78.8 | 78.8 |
| debian debian_linux | 9.0, 10.0 | — |
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