Solarwinds N-Central

An issue was discovered in SolarWinds N-Central 12.3.0.670. The AdvancedScripts HTTP endpoint allows Relative Path Traversal by an authenticated user of the N-Central Administration Console (NAC), leading to execution of OS commands as root.

An issue was discovered in SolarWinds N-Central 12.3.0.670. The sudo configuration has incorrect access control because the nable web user account is effectively able to run arbitrary OS commands as root (i.e., the use of root privileges is not limited to specific programs listed in the sudoers file).

SolarWinds N-central through 2020.1 allows session hijacking and requires user interaction or physical access. The N-Central JSESSIONID cookie attribute is not checked against multiple sources such as sourceip, MFA claim, etc. as long as the victim stays logged in within N-Central. To take advantage of this, cookie could be stolen and the JSESSIONID can be captured. On its own this is not a surprising result; low security tools allow the cookie to roam from machine to machine. The JSESSION cookie can then be used on the attackers’ workstation by browsing to the victim’s NCentral server URL and replacing the JSESSIONID attribute value by the captured value. Expected behavior would be to check this against a second source and enforce at least a reauthentication or multi factor request as N-Central is a highly privileged service.

An issue was discovered in SolarWinds N-Central 12.3.0.670. The AdvancedScripts HTTP endpoint allows CSRF.

An issue was discovered in SolarWinds N-Central 12.3.0.670. The local database does not require authentication: security is only based on ability to access a network interface. The database has keys and passwords.

An issue was discovered in SolarWinds N-Central 12.3.0.670. Hard-coded Credentials exist by default for local user accounts named support@n-able.com and nableadmin@n-able.com. These allow logins to the N-Central Administrative Console (NAC) and/or the regular web interface.

SolarWinds N-central before 12.1 SP1 HF5 and 12.2 before SP1 HF2 allows remote attackers to retrieve cleartext domain admin credentials from the Agent & Probe settings, and obtain other sensitive information. The attacker can use a customer ID to self register and read any aspects of the agent/appliance configuration.

SolarWinds N-Central version 12.3 GA and lower does not set the JSESSIONID attribute to HTTPOnly. This makes it possible to influence the cookie with javascript. An attacker could send the user to a prepared webpage or by influencing JavaScript to the extract the JESSIONID. This could then be forwarded to the attacker.

An issue was discovered in SolarWinds N-Central 12.3.0.670. The SSH component does not restrict the Communication Channel to Intended Endpoints. An attacker can leverage an SSH feature (port forwarding with a temporary key pair) to access network services on the 127.0.0.1 interface, even though this feature was only intended for user-to-agent communication.