CVE-2020-36517 — HIGH (7.5)

Vulnerability Description

An information leak in Nabu Casa Home Assistant Operating System and Home Assistant Supervised 2022.03 allows a DNS operator to gain knowledge about internal network resources via the hardcoded DNS resolver configuration.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Home-Assistant	Home-Assistant	2022.03

Related Weaknesses (CWE)

CWE-203

References

https://community.home-assistant.io/t/ha-os-dns-setting-configuration-not-respecExploitIssue TrackingVendor Advisory
https://github.com/home-assistant/plugin-dns/issues/17Third Party Advisory
https://github.com/home-assistant/plugin-dns/issues/20ExploitIssue TrackingThird Party Advisory
https://github.com/home-assistant/plugin-dns/issues/22Issue TrackingThird Party Advisory
https://github.com/home-assistant/plugin-dns/issues/50ExploitIssue TrackingThird Party Advisory
https://github.com/home-assistant/plugin-dns/issues/51ExploitIssue TrackingThird Party Advisory
https://github.com/home-assistant/plugin-dns/issues/53ExploitThird Party Advisory
https://github.com/home-assistant/plugin-dns/issues/54ExploitThird Party Advisory
https://github.com/home-assistant/plugin-dns/issues/6ExploitThird Party Advisory
https://github.com/home-assistant/plugin-dns/issues/64ExploitThird Party Advisory
https://github.com/home-assistant/plugin-dns/issues/70ExploitThird Party Advisory
https://github.com/home-assistant/plugin-dns/pull/55ExploitPatchThird Party Advisory
https://github.com/home-assistant/plugin-dns/pull/56ExploitIssue TrackingThird Party Advisory
https://github.com/home-assistant/plugin-dns/pull/58PatchThird Party Advisory
https://github.com/home-assistant/plugin-dns/pull/59Issue TrackingPatchThird Party Advisory

FAQ

What is CVE-2020-36517?

CVE-2020-36517 is a vulnerability with a CVSS score of 7.5 (HIGH). An information leak in Nabu Casa Home Assistant Operating System and Home Assistant Supervised 2022.03 allows a DNS operator to gain knowledge about internal network resources via the hardcoded DNS re...

How severe is CVE-2020-36517?

CVE-2020-36517 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-36517?

Check the references section above for vendor advisories and patch information. Affected products include: Home-Assistant Home-Assistant.