CVE-2023-41034 — Eclipse Leshan is a device management server and client Java implementation
Eclipse Leshan is a device management server and client Java implementation. In affected versions DDFFileParser` and `DefaultDDFFileValidator` (and so `ObjectLoader`) are vulnerable to `XXE Attacks`. A DDF file is a LWM2M format used to store LWM2M object description. Leshan user
Published
2023-08-31T17:01:38.082Z
Last modified
2024-09-27T14:17:15.256Z
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
01What is this vulnerability?
Eclipse Leshan is a device management server and client Java implementation. In affected versions DDFFileParser` and `DefaultDDFFileValidator` (and so `ObjectLoader`) are vulnerable to `XXE Attacks`. A DDF file is a LWM2M format used to store LWM2M object description. Leshan users are impacted only if they parse untrusted DDF files (e.g. if they let external users provide their own model), in…
02Affected products
| Vendor | Product | Versions |
|---|
| eclipse-leshan | leshan | < 1.5.0, >= 2.0.0-M1, < 2.0.0-M13 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:
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07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-08-31T17:01:38.082Z
- Last modified: 2024-09-27T14:17:15.256Z
09References
- github.com — https://github.com/eclipse-leshan/leshan/security/advisories/GHSA-wc9j-gc65-3cm7
- github.com — https://github.com/eclipse-leshan/leshan/commit/29577d2879ba8e7674c3b216a7f01193…
- github.com — https://github.com/eclipse-leshan/leshan/commit/4d3e63ac271a817f81fba3e3229c519a…
- github.com — https://github.com/eclipse-leshan/leshan/wiki/Adding-new-objects#the-lwm2m-model
- owasp.org — https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Proces…
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