CVE-2023-6208
High
Description
When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. *This bug only affects Firefox on X11. Other systems are unaffected.* This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Mozilla Firefox
PublishedNov 21, 2023
First seenNov 21, 2023
How to fix
Update
- mozilla firefox120.0 or later
- mozilla firefox_esr115.5.0 or later
- mozilla thunderbird115.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 120.0 | 120.0 |
| mozilla firefox_esr | v < 115.5.0 | 115.5.0 |
| mozilla thunderbird | v < 115.5 | 115.5 |
| debian debian_linux | 10.0, 11.0, 12.0 | — |
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