XXE in Eclipse Leshan
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.
Vulnerability class: XXE (XML External Entity)
EPSS: 0.006 (43.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.
Affected products
- Eclipse Leshan — versions 2.0.0
- Eclipse-leshan Leshan — versions < 1.5.0, >= 2.0.0-M1, < 2.0.0-M13
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory, Mitigation)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Not Applicable)
Frequently asked questions
- What is CVE-2023-41034?
- CVE-2023-41034 is a medium-severity vulnerability in Eclipse Leshan, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 6.5/10. Published 2023-08-31.
- How severe is CVE-2023-41034?
- Medium severity. CVSS v3 base score is 6.5 out of 10.