XXE in Gematik App-Referencevalidator
CVE-2024-46984
The reference validator is a tool to perform advanced validation of FHIR resources for TI applications and interoperability standards. The profile location routine in the referencevalidator commons package is vulnerable to `XML External Entities` attack due to insecure defaults of the used Woodstox WstxInputFactory. A malicious XML resource can lead to network requests issued by referencevalidator and thus to a `Server Side Request Forgery` attack. The vulnerability impacts applications which use referencevalidator to process XML resources from untrusted sources. The problem has been patched with the 2.5.1 version of the referencevalidator. Users are strongly recommended to update to this version or a more recent one. A pre-processing or manual analysis of input XML resources on existence of DTD definitions or external entities can mitigate the problem.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (48.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Gematik App-Referencevalidator — versions < 2.5.1
- Gematik Reference Validator
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/gematik/app-referencevalidator/security/advisories/GHSA-68j8-fp38-p4… (Vendor Advisory)
- cheatsheetseries.owasp.org/cheatsheets/XML_External_Entity_Prevention_Cheat_She… (Technical Description)
- github.com/gematik/app-referencevalidator/releases/tag/2.5.1 (Release Notes)
- owasp.org/www-community/attacks/Server_Side_Request_Forgery (Technical Description)
- owasp.org/www-project-top-ten/2017/A4_2017-XML_External_Entities_(XXE) (Technical Description)
- owasp.org/www-project-top-ten/2017/A4_2017-XML_External_Entities_(XXE) (Technical Description)
Frequently asked questions
- What is CVE-2024-46984?
- CVE-2024-46984 is a high-severity vulnerability in Gematik App-Referencevalidator, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.6/10. Published 2024-09-19.
- How severe is CVE-2024-46984?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2024-46984 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.