Description
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.
References (5)
Core 5
Core References
Mitigation, Third Party Advisory x_refsource_confirm
https://github.com/eclipse-leshan/leshan/security/advisories/GHSA-wc9j-gc65-3cm7
Patch x_refsource_misc
https://github.com/eclipse-leshan/leshan/commit/29577d2879ba8e7674c3b216a7f01193fc7ae013
Patch x_refsource_misc
https://github.com/eclipse-leshan/leshan/commit/4d3e63ac271a817f81fba3e3229c519af7a3049c
Product x_refsource_misc
https://github.com/eclipse-leshan/leshan/wiki/Adding-new-objects#the-lwm2m-model
Not Applicable x_refsource_misc
https://owasp.org/www-community/vulnerabilities/XML_External_Entity_(XXE)_Processing
Scores
CVSS v3
6.5
EPSS
0.0011
EPSS Percentile
28.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-611
Status
published
Products (3)
eclipse/leshan
2.0.0 milestone1 (12 CPE variants)
eclipse/leshan
< 1.5.0
org.eclipse.leshan/leshan-core
0 - 1.5.0Maven
Published
Aug 31, 2023
Tracked Since
Feb 18, 2026