CVE-2023-4583
High
Description
When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Mozilla Firefox
PublishedSep 11, 2023
First seenSep 11, 2023
Weakness typeCWE-754CWE-754
How to fix
Update
- mozilla firefox117.0 or later
- mozilla firefox_esr115.2 or later
- mozilla thunderbird115.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 117.0 | 117.0 |
| mozilla firefox_esr | v < 115.2 | 115.2 |
| mozilla thunderbird | v < 115.2 | 115.2 |
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