CVE-2023-4578
Medium
Description
When calling `JS::CheckRegExpSyntax` a Syntax Error could have been set which would end in calling `convertToRuntimeErrorAndClear`. A path in the function could attempt to allocate memory when none is available which would have caused a newly created Out of Memory exception to be mishandled as a Syntax Error. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Mozilla Firefox
PublishedSep 11, 2023
First seenSep 11, 2023
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 |
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.