CAPEC の説明
An adversary uses a SYN scan to determine the status of ports on the remote target. SYN scanning is the most common type of port scanning that is used because of its many advantages and few drawbacks. As a result, novice attackers tend to overly rely on the SYN scan while performing system reconnaissance. As a scanning method, the primary advantages of SYN scanning are its universality and speed.
CAPEC の情報
実行フロー
1) Experiment
An adversary sends SYN packets to ports they want to scan and checks the response without completing the TCP handshake.
2) Experiment
An adversary uses the response from the target to determine the port's state. The adversary can determine the state of a port based on the following responses. When a SYN is sent to an open port and unfiltered port, a SYN/ACK will be generated. When a SYN packet is sent to a closed port a RST is generated, indicating the port is closed. When SYN scanning to a particular port generates no response, or when the request triggers ICMP Type 3 unreachable errors, the port is filtered.
前提条件
This scan type is not possible with some operating systems (Windows XP SP 2). On Linux and Unix systems it requires root privileges to use raw sockets.必要なリソース
The ability to send TCP SYN segments to a host during network reconnaissance via the use of a network mapper or scanner, or via raw socket programming in a scripting language. Packet injection tools are also useful for this purpose. Depending upon the method used it may be necessary to sniff the network in order to see the response.関連する弱点
| 弱点名 | |
|---|---|
CWE-200 |
Exposure of Sensitive Information to an Unauthorized Actor The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. |
参考文献
REF-33
Hacking Exposed: Network Security Secrets & SolutionsStuart McClure, Joel Scambray, George Kurtz.
REF-128
RFC793 - Transmission Control ProtocolDefense Advanced Research Projects Agency Information Processing Techniques Office, Information Sciences Institute University of Southern California.
http://www.faqs.org/rfcs/rfc793.html
REF-34
Nmap Network Scanning: The Official Nmap Project Guide to Network Discovery and Security ScanningGordon "Fyodor" Lyon.
REF-130
The Art of Port ScanningGordon "Fyodor" Lyon.
http://phrack.org/issues/51/11.html
登録情報
| 名前 | 組織 | 日付 | リリース日 |
|---|---|---|---|
| CAPEC Content Team | The MITRE Corporation |
変更履歴
| 名前 | 組織 | 日付 | コメント |
|---|---|---|---|
| CAPEC Content Team | The MITRE Corporation | Updated Attack_Motivation-Consequences, Description, Description Summary, References, Related_Weaknesses, Resources_Required | |
| CAPEC Content Team | The MITRE Corporation | Updated Description, Execution_Flow | |
| CAPEC Content Team | The MITRE Corporation | Updated Description, Extended_Description |
