CVE-2023-41034

DDFFileParser in eclipse leshan is vulnerable to XXE Attacks

CVSS 6.5 MEDIUMEPSS 0.6%CWE-611

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

31 Aug 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

Affected products

eclipse-leshan · leshan

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References

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