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PLC protocol fuzzy testing method and device, electronic equipment, storage medium

A PLC protocol and fuzzy testing technology, applied in electrical testing/monitoring, testing/monitoring control systems, instruments, etc., can solve problems such as low testing efficiency, improve fuzzy testing efficiency, reduce dependence, and improve fuzzy testing efficiency Effect

Active Publication Date: 2022-06-21
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the embodiments of the present application is to provide a PLC protocol fuzzy testing method and device, electronic equipment, and storage media to solve the technical problems of low testing efficiency in related technologies

Method used

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  • PLC protocol fuzzy testing method and device, electronic equipment, storage medium
  • PLC protocol fuzzy testing method and device, electronic equipment, storage medium
  • PLC protocol fuzzy testing method and device, electronic equipment, storage medium

Examples

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Embodiment Construction

[0064] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numerals in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as recited in the appended claims.

[0065] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and / or" as...

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Abstract

The invention discloses a PLC protocol fuzzy testing method and device, electronic equipment, and a storage medium, including: constructing a seed bank; selecting seeds that have not undergone deterministic mutation from the seed bank to perform deterministic mutation to generate deterministic Mutation use case; the deterministic mutation use case is sent to the PLC under test as a request message; if all the seeds in the seed bank have undergone deterministic mutation, randomly select seeds from the seed bank for random mutation , generate a random variation use case; send the random variation use case as a request message to the PLC under test; receive the response message returned by the PLC under test, and save the response message with a tree data structure; if a certain response If the message adds a new node in the data structure of the tree, it is considered that the response message is valuable; the request message corresponding to the valuable response message is stored in the seed bank to update the seed library. The efficiency of fuzz testing has been significantly improved.

Description

technical field [0001] The present application relates to the field of industrial control system security, and in particular, to a method and device for fuzzing a PLC protocol, an electronic device, and a storage medium. Background technique [0002] Programmable Logic Controllers (PLCs) are basic components widely used in various industrial control systems. Most PLCs provide a proprietary and programmable TCP / IP connection configuration. This simplification allows users to With the ability to remotely access these devices, it is also possible for an attacker to interact directly with the PLC. Therefore, it is necessary to analyze the communication between the control system and the integrated development environment (IDE), obfuscating the proprietary industrial protocols, in order to discover the security problems. [0003] Fuzzing is a software testing technique. The core idea is to input automatically or semi-automatically generated random data into a program and monito...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCG05B23/0221
Inventor 王文海武岳张旭鸿张奕楠侯黎阳谢辰承
Owner ZHEJIANG UNIV