Zero-day vulnerability in Orion Platform

Improper Authentication
CVE-2020-10148


Known malware:

SUPERNOVA

Vulnerability details

Advisory: SB2020122801 - Authentication bypass in SolarWinds Orion API

Vulnerable component: Orion Platform

CVE-ID: CVE-2020-10148

CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-287 - Improper Authentication

Description:

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests within the SolarWinds Orion API. If an attacker appends a PathInfo parameter of WebResource.adx, ScriptResource.adx, i18n.ashx, or Skipi18n to a request to a SolarWinds Orion server, SolarWinds may set the SkipAuthorization flag, which may allow the API request to be processed without requiring authentication. This vulnerability could allow a remote non-authenticated attacker to bypass authentication and execute API commands which may result in a compromise of the SolarWinds instance.

Note, this vulnerability is dubbed SUPERNOVA and is being exploited in the wild.

External links:

https://www.kb.cert.org/vuls/id/843464

https://www.solarwinds.com/securityadvisory