Description
Jenkins 2.442 through 2.554 (both inclusive), LTS 2.426.3 through LTS 2.541.2 (both inclusive) performs origin validation of requests made through the CLI WebSocket endpoint by computing the expected origin for comparison using the Host or X-Forwarded-Host HTTP request headers, making it vulnerable to DNS rebinding attacks that allow bypassing origin validation.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Jenkins Project / Jenkins0 – 2.426.3
- Jenkins Project / Jenkins2.427 – 2.442
- Jenkins Project / Jenkins2.555 – *
- Jenkins Project / Jenkins2.541.3 – 2.541.*