GHSA-6w63-h3fj-q4vw
fast-xml-parser vulnerable to Regex Injection via Doctype Entities
En bref
- Publiée
- Mise à jour
- CVE
- CVE-2023-34104
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
### Impact "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 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. ### Patches The problem has been resolved in v4.2.4 ### Workarounds Avoid using DOCTYPE parsing by `processEntities: false` option.
Paquets affectés
| Paquet | Versions |
|---|---|
| npm · fast-xml-parser | introduced 4.1.3, fixed 4.2.4 |
Références
- https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-6w63-h3fj-q4vw WEB
- https://nvd.nist.gov/vuln/detail/CVE-2023-34104 ADVISORY
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/39b0e050bb909e8499478657f84a3076e39ce76c WEB
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/a4bdced80369892ee413bf08e28b78795a2b0d5b WEB
- https://github.com/NaturalIntelligence/fast-xml-parser PACKAGE
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |