CVE-2023-4578

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    CVE-2023-4578

    Published: 11 Sept 2023Last Modified: 1 Jul 2026

    Summary:

    Details: 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.

    References: https://www.mozilla.org/security/advisories/mfsa2023-34/, https://www.mozilla.org/security/advisories/mfsa2023-36/, https://www.mozilla.org/security/advisories/mfsa2023-38/, https://bugzilla.mozilla.org/show_bug.cgi?id=1839007

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-4578 | CVE-DB