CVE-2023-5174
Critical
Description
If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash. *This bug only affects Firefox on Windows when run in non-standard configurations (such as using `runas`). Other operating systems are unaffected.* This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Mozilla Firefox
PublishedSep 27, 2023
First seenSep 27, 2023
Weakness typeCWE-416Use after free
How to fix
Update
- mozilla firefox118 or later
- mozilla firefox_esr115.3 or later
- mozilla thunderbird115.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 118 | 118 |
| mozilla firefox_esr | v < 115.3 | 115.3 |
| mozilla thunderbird | v < 115.3 | 115.3 |
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.