CAPEC-328: TCP 'RST' Flag Checksum Probe
Description
This OS fingerprinting probe performs a checksum on any ASCII data contained within the data portion or a RST packet. Some operating systems will report a human-readable text message in the payload of a 'RST' (reset) packet when specific types of connection errors occur. RFC 1122 allows text payloads within reset packets but not all operating systems or routers implement this functionality.
- Likelihood of attack
- Medium
- Typical severity
- Low
- Abstraction
- DetailedA low-level, detailed pattern, often for a particular technology.
Mechanism of attack: Collect and Analyze Information
Prerequisites
- The ability to monitor and interact with network communications.Access to at least one host, and the privileges to interface with the network interface card.
Consequences
- Confidentiality
Read Data
- ConfidentialityAccess ControlAuthorization
Bypass Protection Mechanism; Hide Activities
Mitigations
CAPEC 3.9 lists no mitigation for this pattern; see its child patterns or related weaknesses.