vulnerability
MFSA2023-34 Firefox: Security Vulnerabilities fixed in Firefox 117 (CVE-2023-4578)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:N/I:N/A:C) | Aug 29, 2023 | Aug 30, 2023 | Aug 11, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
Aug 29, 2023
Added
Aug 30, 2023
Modified
Aug 11, 2025
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.
Solution
mozilla-firefox-upgrade-117_0
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