CAPECattack pattern

CAPEC-324 TCP (ISN) Sequence Predictability Probe

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Abstraction
Detailed
Status
Stable
Likelihood of attack
Medium
Typical severity
Low
CAPEC version
3.9

Description

This type of operating system probe attempts to determine an estimate for how predictable the sequence number generation algorithm is for a remote host. Statistical techniques, such as standard deviation, can be used to determine how predictable the sequence number generation is for a system. This result can then be compared to a database of operating system behaviors to determine a likely match for operating system and version.

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 • Confidentiality, Access Control, Authorization: Bypass Protection Mechanism, Hide Activities

Related

Child of · CAPEC (1)

  • CAPEC-312 Active OS Fingerprinting attack pattern

Weakness · CWE (1)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness

Referenced by CWE · attack pattern (1)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness