Container Image Layer Permissions Against Unauthorized Staging Changes

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Solution Overview

Problem

Existing container systems lack effective security measures to prevent unauthorized changes to image layers, particularly in large-scale projects, leading to potential modifications or extensions that can result in unpredictable outcomes.

Innovation Solution

Implementing a Layer Staging Permission Table (LSPT) and Layer Staging Permission ID (LSPID) to record and verify user group permissions for image layer staging operations, using a Layer Staging Permission Producer (LSPP) and Layer Staging Permission Assumer (LSPA) modules to ensure only authorized users can perform operations like pull, run, build, or push images.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If container images are composed of multiple layers allowing incremental changes, then the flexibility and ease of deployment are improved, but the security risk of unauthorized modifications increases

Engineering Contradiction:

Improveflexibility of container image updatesVSAvoidunauthorized modifications to image layers

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary permission verification before allowing any image layer staging operations. The permission verification mechanism checks user credentials and authorization levels in advance, preventing unauthorized modifications before they can occur. This resolves the contradiction by maintaining security controls while allowing legitimate incremental updates to proceed.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary permission verification mechanism that sits between the user and the container image layer system. This intermediary checks and validates user permissions, acting as a mediator that allows legitimate updates while blocking unauthorized access. This enables flexible image updates while preventing harmful unauthorized modifications.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If permission verification mechanisms are implemented for image layer operations, then security against unauthorized changes is improved, but the complexity of permission management increases

Engineering Contradiction:

Improvesecurity of container image layersVSAvoidcomplexity of permission management system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by implementing permission verification specifically for image layer staging operations rather than across the entire container system. The permission checks are localized to the specific operations that modify image layers, providing targeted security without requiring comprehensive permission management across all system operations. This reduces overall complexity while maintaining security where it is most needed.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The permission management system is segmented into discrete verification steps for different image layer operations. Each operation (pull, run, build, push) has its own permission verification process, allowing the system to manage complexity by breaking down permission control into manageable, operation-specific segments rather than a monolithic permission system.

Inventive Principle:

Principle #1Segmentation

3Measurement precision

If granular permission control is applied to different user groups for image staging operations, then the precision of access control is improved, but the effort required for permission definition and management increases

Engineering Contradiction:

Improveprecision of access controlVSAvoidtime for permission definition and management

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent implements universal permission verification logic that handles multiple image layer operations (pull, run, build, push) through a common authorization mechanism. This multi-functional approach allows the same permission verification system to control access across different operation types, reducing the time and effort needed to define and manage permissions for each operation separately while maintaining precise access control.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12388830B2Secure container use based on permission limitation of image layers

Publication Date: 2025.08.12 INTERNATIONAL BUSINESS MACHINE CORPORATION

AI summary

Secure container use is provided. The method generates respective user group permission identifications associated with image layer staging operations permissions assigned to different user groups as well as a list of the user group permission identifications. Responsive to a request from a user to perform an image layer staging operation, the method verifies whether the user has a user group permission identification in the list of the user group permission identifications. Responsive to verification that the user has a user group permission identification in the list of the user group permission identifications, the requested operation is executed. Responsive to determination that the user does not have a user group permission identification in the list of the user group permission identifications, the requested operation is denied.