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CVE-2023-34104

CVE-2023-34104 · Regex Injection via Doctype Entities

Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.

fast-xml-parser is an open source, pure javascript xml parser. fast-xml-parser allows special characters in entity names, which are not escaped or sanitized. Since the entity name is used for creating a regex for searching and replacing entities in the XML body, an attacker can abuse it for denial of service (DoS) attacks. By crafting an entity name that results in an intentionally bad performing regex and utilizing it in the entity replacement step of the parser, this can cause the parser to stall for an indefinite amount of time. This problem has been resolved in v4.2.4. Users are advised to upgrade. Users unable to upgrade should avoid using DOCTYPE parsing by setting the `processEntities: false` option.

CVSS 7.5 · Élevée · EPSS 1,1% · Correctif disponible

Publication
Mise à jour

Pile logicielle: node

Produits et versions concernés

  • fast-xml-parser

    Versions du logiciel
    • >= 4.1.3, < 4.2.4: Concernée

    Aucun correctif publié

  • fast-xml-parser npm

    Plages de versions concernées
    • SEMVER: ≥ 4.1.3, < 4.2.4

    Mettez à jour vers 4.2.4

Sources originales

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