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CVE-2018-1000155: Opennetworking Openflow: Denial of service
CVE-2018-1000155 is rated critical with a CVSS v3.0 base score of 9.8 and affects Opennetworking Openflow. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.
Vulnerability description
OpenFlow version 1.0 onwards contains a Denial of Service and Improper authorization vulnerability in OpenFlow handshake: The DPID (DataPath IDentifier) in the features_reply message are inherently trusted by the controller. that can result in Denial of Service, Unauthorized Access, Network Instability. This attack appear to be exploitable via Network connectivity: the attacker must first establish a transport connection with the OpenFlow controller and then initiate the OpenFlow handshake.
Severity breakdown
CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
- Attack complexity: Low. No special conditions; the attack can be repeated reliably.
- Privileges required: None. No account or prior access is needed.
- User interaction: None. No action from any user is needed.
- Scope: Unchanged. Impact stays within the vulnerable component.
- Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
- Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
- Availability impact: High. Total loss of availability; the component can be shut down.
Underlying weakness
CWE-863: Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Affected products
- Opennetworking Openflow: all versions listed by NVD