6.4

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2024-51417

CVE-2024-51417: Property reflection in System.Linq.Dynamic.Core

An issue in System.Linq.Dynamic.Core versions before v.1.6.0 allow remote access to properties on reflection types and static properties/fields.

(GitHub Advisory)

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CVE-2024-51417

CVE-2024-51417:

6.4

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
System.Linq.Dynamic.Core	nuget	< 1.6.0	1.6.0

Technical Details

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Miggo AI

Root Cause Analysis

The vulnerability stemmed from two key issues: 1) Unrestricted type resolution in Dynamic LINQ's type provider allowed accessing reflection types (like System.Reflection) and arbitrary static members. 2) The expression parser permitted access to static properties/fields without proper authorization. The commit shows critical changes in type resolution logic - AbstractDynamicLinqCustomTypeProvider was modified to only resolve types explicitly marked with DynamicLinqTypeAttribute or in AdditionalTypes, rather than scanning all assemblies. The PredefinedTypesHelper change removing 'object' from predefined types further restricted reflection capabilities. Test cases demonstrate that static properties like AppSettings.SettingsProp were accessible when they shouldn't have been, which the patch addresses by requiring explicit type registration.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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