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Method and system for detecting overflow loophole based on format heterogeneity and storage medium

A vulnerability detection and heterogeneous technology, applied in the field of network security, can solve problems such as resource occupation and manpower occupation

Active Publication Date: 2018-06-01
HARBIN ANTIY TECH
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Problems solved by technology

[0005] In the past inspections, the behavioral characteristics and information of the discovered vulnerabilities will be stored in the vulnerability database, and the vulnerability database needs to be continuously updated and maintained, which takes up resources and manpower

Method used

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  • Method and system for detecting overflow loophole based on format heterogeneity and storage medium
  • Method and system for detecting overflow loophole based on format heterogeneity and storage medium

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the present invention will be further detailed below in conjunction with the accompanying drawings illustrate.

[0036] An overflow vulnerability detection method based on format heterogeneity, such as figure 1 shown, including:

[0037] S101: Capture the network data packet, and restore the network data packet to a file;

[0038] S102: Classify the restored files according to file types, and divert files of the same type to the same detection branch;

[0039] S103: extracting structural features of files in each detection branch;

[0040] S104: Calculate the degree of difference between the corresponding structural features of each file through a feature extraction algorithm;

[00...

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Abstract

The invention provides a method and system for detecting an overflow loophole based on format heterogeneity and a storage medium. The method includes the steps that a network data packet is acquired and restored into files, the files are distributed to each detection branch according to file types, structure features of the file in each detection branch are extracted, target detection features aredetermined through the calculation of the difference degree, then clustering analysis is conducted on the features of each target detection feature, and the obtained file corresponding to the small part of the features is the file with an abnormal structure. According to the method, through a clustering algorithm of the structure features, a small part of abnormal files in a large number of filescan be quickly distinguished, deep detection is conducted only on the abnormal files, the efficiency of detecting the overflow loophole is effectively improved, and an inspired detection capability for unknown overflow loopholes is achieved.

Description

technical field [0001] The invention relates to the technical field of network security, in particular to an overflow vulnerability detection method, system and storage medium based on format heterogeneity. Background technique [0002] With the development of the Internet and the rapid growth of network information, it is becoming more and more important to protect the security of networks and hosts. Vulnerabilities can enable attackers to access or damage the system without authorization, so how to discover and deal with vulnerabilities has become the main focus of researchers. [0003] At this stage, the analysis of overflow vulnerabilities mostly relies on manual work. The large number of overflow vulnerabilities and the different judgment methods for different types of overflows lead to a decrease in the efficiency of manual analysis. There are few automated solutions that can complete the detection. [0004] The existing vulnerability detection method is to compare th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/57
CPCG06F21/577
Inventor 刘桂玲童志明何公道肖新光
Owner HARBIN ANTIY TECH
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