CVE-2023-41034

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 that case they MUST upgrade to fixed version. If you parse only trusted DDF file and validate only with trusted xml schema, upgrading is not mandatory. This issue has been fixed in versions 1.5.0 and 2.0.0-M13. Users are advised to upgrade. There are no known workarounds for this vulnerability.

• CWE-611

• https://github.com/eclipse-leshan/leshan/commit/29577d2879ba8e7674c3b216a7f01193fc7ae013Patch
• https://github.com/eclipse-leshan/leshan/commit/4d3e63ac271a817f81fba3e3229c519af7a3049cPatch
• https://github.com/eclipse-leshan/leshan/security/advisories/GHSA-wc9j-gc65-3cm7Mitigation, Third Party Advisory
• https://github.com/eclipse-leshan/leshan/wiki/Adding-new-objects#the-lwm2m-modelProduct
• https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_ProcessingNot Applicable
• https://github.com/eclipse-leshan/leshan/commit/29577d2879ba8e7674c3b216a7f01193fc7ae013Patch
• https://github.com/eclipse-leshan/leshan/commit/4d3e63ac271a817f81fba3e3229c519af7a3049cPatch
• https://github.com/eclipse-leshan/leshan/security/advisories/GHSA-wc9j-gc65-3cm7Mitigation, Third Party Advisory
• https://github.com/eclipse-leshan/leshan/wiki/Adding-new-objects#the-lwm2m-modelProduct
• https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_ProcessingNot Applicable

Published

Aug 31, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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