CVE-2023-41034 Information

Description

Eclipse Leshan is a device management server and client Java implementation. In affected versions DDFFileParserandDefaultDDFFileValidator(and soObjectLoader) 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.

Reference

https://github.com/eclipse-leshan/leshan/commit/4d3e63ac271a817f81fba3e3229c519af7a3049c https://github.com/eclipse-leshan/leshan/wiki/Adding-new-objects#the-lwm2m-model https://github.com/eclipse-leshan/leshan/security/advisories/GHSA-wc9j-gc65-3cm7 https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing https://github.com/eclipse-leshan/leshan/commit/29577d2879ba8e7674c3b216a7f01193fc7ae013