Security Advisory

CVE-2023-4578

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2023-09-11 08:01:17

Last updated 2025-12-18 15:23:11

Assigner mozilla

State 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.

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