Proxy Server Policy Enforcement for Vulnerable Software Dependencies
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Solution Overview
Problem
Existing network communication systems lack effective mechanisms to prevent the installation of vulnerable software dependencies, which can compromise private network security by allowing malicious or unregulated access to internet resources.
Innovation Solution
A proxy server is configured with security policies to intercept and analyze software dependency installation requests, querying a vulnerability management database to assess risks and enforce policies, thereby blocking the installation of vulnerable software packages across all network requests from monitored machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users are allowed unfettered access to the internet to download software dependencies, then ease of operation and productivity are improved, but network security and reliability deteriorate due to potential infiltration of vulnerable or malicious resources
Solution Approach 1:
A forward proxy server is introduced as an intermediary between user devices and the internet. The proxy intercepts software dependency requests, evaluates them against security policies and vulnerability databases, and selectively blocks or permits downloads. This mediator enables secure software installation without requiring users to manually configure security settings, thus maintaining ease of operation while improving network security and reliability
2Reliability
If a forward proxy is deployed to intercept and filter network traffic, then network security and reliability are improved, but device complexity and ease of operation worsen due to additional infrastructure requirements
Solution Approach 1:
The forward proxy server is designed to perform multiple functions: it intercepts network traffic, evaluates software dependencies against security policies, queries vulnerability databases, blocks malicious downloads, and logs security events. By consolidating these diverse security functions into a single multi-functional system, the patent reduces overall infrastructure complexity while maintaining high network security and reliability
3Reliability
If security policies are enforced on all software dependency requests, then network security is improved, but productivity and ease of operation deteriorate due to additional verification steps
Solution Approach 1:
Security policies and vulnerability criteria are pre-configured in the forward proxy server before software dependency requests are processed. The proxy maintains precompiled security rules, approved software lists, and vulnerability database caches. When a software dependency request arrives, the proxy performs rapid pattern matching against pre-established criteria rather than conducting full security analyses, significantly reducing verification time while maintaining comprehensive security checks
Data Source
AI summary
A proxy server receives a request from a client network application executing on a client device. The proxy server detects that the request is for a software dependency installation package. The proxy server determines a risk score associated with the software dependency installation package. Based on the risk score associated with the software dependency installation package, the proxy server determines that the software dependency installation package violates a policy. When the software dependency installation package violates the policy, the proxy server blocks the request and stores a log entry in an auditing system including data indicating the blocking of the request.