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CVE-2023-4578
Published: Sep 11, 2023
Modified: Dec 18, 2025
PUBLISHED
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.
| Vendor | Product | Versions |
|---|---|---|
Mozilla | Firefox | affected unspecified - < 117 |
Mozilla | Firefox ESR | affected unspecified - < 115.2 |
Mozilla | Thunderbird | affected unspecified - < 115.2 |
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