Vulnerability risk assessment method based on cvss

Abstract

The invention provides a loophole risk basic evaluation method based on a CVSS. The method comprises the steps of S01, preprocessing data; S02, determining weights of the three basic evaluation indexes, and conducting optimization; S03, solving the weights of the basic evaluation indexes; S04, calculating a basic evaluation estimation value of every loophole threat. Compared with the prior art, according to the loophole risk basic evaluation method based on the CVSS, on the basis of CVSS evaluation, a basic evaluation estimation index weight distribution method is redesigned, according to the relative importance of the basic evaluation indexes, the weights of the basic evaluation indexes are optimized and distributed, a grey correlation degree index weight solving method is combined with the basic evaluation estimation index weight distribution method, so that the evaluation result is more objective, the diversity of the evaluation result is improved, and the loophole threat is conveniently and visually distinguished.

Description

technical field [0001] The invention belongs to the technical field of system security, in particular to a CVSS-based vulnerability risk assessment method. Background technique [0002] In recent years, the number of vulnerabilities in information systems has grown exponentially, and Advanced Persistent Threat (APT) attacks continue to emerge, and they are extremely targeted and concealed. Traditional protection methods represented by technologies such as intrusion detection and firewall are no longer sufficient to deal with these security threats. The vulnerability threat scoring method can rank the vulnerabilities according to the relevant attributes and the degree of harm, and prioritize the more destructive security vulnerabilities to minimize the possible risks caused by the vulnerabilities. [0003] According to the diversity of scoring results, vulnerability threat scoring is divided into two methods: qualitative assessment and quantitative assessment. The method of...

AI Technical Summary

Problems solved by technology

However, CVSS has its own shortcomings. The weight distribution of basic evaluation indicators depends too much on the subjective experience decisions of experts and scholars when formulating, and the measurement standards lack objectivity.

In addition, in the process of basic scoring of vulnerability threats, CVSS assigns equal weights to confidentiality impact, integrity impact, and exploitability impact without considering their relative importance, and cannot clearly distinguish the differences in the internal attributes of vulnerabilities with similar scores. lead to duplication and waste of resources

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