Vulnerability · Published Feb 1, 2021 · Assigned by GitHub_M
CVE-2021-21266XXE vulnerability in OpenHAB
Medium 6.4
In plain English
A medium-severity XML external entity in openhab-addons from openhab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities).
Official description
openHAB is a vendor and technology agnostic open source automation software for your home. In openHAB before versions 2.5.12 and 3.0.1 the XML external entity (XXE) attack allows attackers in the same network as the openHAB instance to retrieve internal information like the content of files from the file system. Responses to SSDP requests can be especially malicious. All add-ons that use SAX or JAXB parsing of externally received XML are potentially subject to this kind of attack. In openHAB, the following add-ons are potentially impacted: AvmFritz, BoseSoundtouch, DenonMarantz, DLinkSmarthome, Enigma2, FmiWeather, FSInternetRadio, Gce, Homematic, HPPrinter, IHC, Insteon, Onkyo, Roku, SamsungTV, Sonos, Roku, Tellstick, TR064, UPnPControl, Vitotronic, Wemo, YamahaReceiver and XPath Tranformation. The vulnerabilities have been fixed in versions 2.5.12 and 3.0.1 by a more strict configuration of the used XML parser.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| openhab | openhab-addons | < 2.5.12= 3.0.0 |
Weakness: CWE-611 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
References
- https://github.com/openhab/openhab-addons/security/advisories/GHSA-r2hc-pmr7-4c9r x_refsource_CONFIRM
- https://dev.to/brianverm/configure-your-java-xml-parsers-to-prevent-xxe-213c x_refsource_MISC
- https://www.contrastsecurity.com/security-influencers/xml-xxe-pitfalls-with-jaxb x_refsource_MISC
- https://github.com/openhab/openhab-addons/commit/81935b0ab126e6d9aebd2f6c3fc67d82bb7e8b86 x_refsource_MISC