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security: Fix CVE-2024-0056 - SQL Data Provider Security Feature Bypass
**Vulnerability**: CVE-2024-0056 (HIGH severity) **Type**: Adversary-in-the-Middle (AiTM) attack **Impact**: Credential theft via TLS bypass **Changes**: - Update System.Data.SqlClient: 4.8.5 → 4.8.6 (fixed) - Update Microsoft.Data.SqlClient: 5.1.1 → 5.2.2 (includes fix 5.1.3+) - Update Microsoft.Extensions.Logging.Abstractions: 8.0.0 → 8.0.2 (resolve dependency conflicts) - Update Microsoft.AspNetCore.Identity.EntityFrameworkCore: 8.0.0 → 8.0.8 (resolve dependency conflicts) **Risk Assessment**: - Production: ✅ NOT VULNERABLE (using safe version 5.1.5 transitively) - Test Project: ⚠️ WAS VULNERABLE (now fixed) - Attack Feasibility: VERY LOW (requires MiTM inside k8s cluster) **Documentation**: - SECURITY-ADVISORY-CVE-2024-0056.md: Complete technical analysis - CVE-2024-0056-QUICK-VERIFICATION.md: Quick reference for Test Engineer - fix-cve-2024-0056.sh: Automated remediation script **Additional Changes**: - k8s/backup-cluster-state.sh: Updated backup rotation (2 → 3 backups) **Testing**: dotnet list package --vulnerable returns CLEAN 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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‎CVE-2024-0056-QUICK-VERIFICATION.md‎

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# CVE-2024-0056: Quick Verification Guide for Test Engineer
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**TL;DR**: ✅ Production is SAFE. Only test project needs update (low priority).
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---
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## 1-Minute Summary
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| Question | Answer |
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|----------|--------|
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| **Is production vulnerable?** | ❌ NO - Using safe version 5.1.5 |
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| **Is test code vulnerable?** | ✅ YES - Using 4.8.5 and 5.1.1 |
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| **Can this be exploited in production?** | ❌ NO - Requires MiTM in k8s cluster (extremely difficult) |
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| **Do I need to fix this urgently?** | ⚠️ MEDIUM PRIORITY - Update test deps within next sprint |
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| **Will updating break anything?** | ❌ NO - Minor version update, backward compatible |
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---
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## Quick Commands
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### Option 1: Automated Fix (Recommended)
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```bash
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cd /home/mpasqui/insightlearn_WASM/InsightLearn_WASM
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./fix-cve-2024-0056.sh
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```
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### Option 2: Manual Fix
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```bash
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cd /home/mpasqui/insightlearn_WASM/InsightLearn_WASM/tests
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# Update packages
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dotnet add package System.Data.SqlClient --version 4.8.6
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dotnet add package Microsoft.Data.SqlClient --version 5.1.5
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# Verify
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dotnet list package --vulnerable
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```
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### Option 3: Edit .csproj Directly
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**File**: `tests/InsightLearn.Tests.csproj`
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**Change lines 30-31 from**:
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```xml
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<PackageReference Include="System.Data.SqlClient" Version="4.8.5" />
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<PackageReference Include="Microsoft.Data.SqlClient" Version="5.1.1" />
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```
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**To**:
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```xml
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<PackageReference Include="System.Data.SqlClient" Version="4.8.6" />
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<PackageReference Include="Microsoft.Data.SqlClient" Version="5.1.5" />
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```
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Then run:
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```bash
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dotnet restore tests/InsightLearn.Tests.csproj
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```
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---
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## Verification Checklist
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After applying fix:
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- [ ] Run tests: `dotnet test tests/InsightLearn.Tests.csproj`
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- [ ] Check vulnerabilities: `dotnet list package --vulnerable` (should be clean)
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- [ ] Commit: `git add tests/InsightLearn.Tests.csproj`
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- [ ] Push: `git push origin main`
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- [ ] Verify GitHub Dependabot alerts auto-close (within 24 hours)
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---
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## Current Package Status
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### Production (Infrastructure + Application)
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```
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✅ Microsoft.Data.SqlClient: 5.1.5 (transitive from EF Core 8.0.8)
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Status: SAFE (fixed version is 5.1.3)
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Location: Transitive dependency, auto-managed by EF Core
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```
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### Test Project
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```
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⚠️ System.Data.SqlClient: 4.8.5
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Status: VULNERABLE
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Fix Required: 4.8.6
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Location: tests/InsightLearn.Tests.csproj line 30
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⚠️ Microsoft.Data.SqlClient: 5.1.1
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Status: VULNERABLE
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Fix Required: 5.1.3 (recommended: 5.1.5 to match production)
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Location: tests/InsightLearn.Tests.csproj line 31
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```
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---
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## Why Is This Low Risk?
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1. **Test Environment Only**: Vulnerable packages are NOT in production code
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2. **Trusted Network**: Tests run on developer machines and CI/CD (trusted environments)
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3. **InMemory Database**: Most tests use EF InMemory provider, not real SQL connections
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4. **K8s Internal Network**: Production SQL Server is inside cluster, no external access
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5. **Attack Complexity**: Requires sophisticated MiTM attack inside Kubernetes network namespace
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---
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## What Does This Vulnerability Allow?
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**CVE-2024-0056**: An attacker positioned **between** the .NET client and SQL Server can:
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- Intercept TLS-encrypted SQL connections
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- Steal SQL authentication credentials
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- Read/modify SQL traffic
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**Required Conditions** (ALL must be true):
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1. ✅ Vulnerable SqlClient version
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2. ❌ Attacker has network MiTM position (between client and SQL Server)
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3. ❌ SQL connection uses TLS encryption (`Encrypt=true`)
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4. ❌ Connection does NOT properly validate certificates
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**InsightLearn Context**:
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- API → SQL Server traffic is **internal to k8s cluster** (same namespace)
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- No public ingress to SQL Server port 1433
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- Extremely difficult for external attacker to achieve MiTM inside cluster
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---
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## Full Documentation
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For complete technical analysis, see:
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- **SECURITY-ADVISORY-CVE-2024-0056.md** (this directory)
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---
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**Last Updated**: 2025-11-09
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**Status**: Analysis Complete, Remediation Script Ready

‎tests/InsightLearn.Tests.csproj‎

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<PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="8.0.0" />
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<PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
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<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.0" />
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<PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.0" />
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<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="8.0.0" />
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<PackageReference Include="System.Data.SqlClient" Version="4.8.5" />
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<PackageReference Include="Microsoft.Data.SqlClient" Version="5.1.1" />
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<PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.2" />
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<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="8.0.8" />
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<PackageReference Include="System.Data.SqlClient" Version="4.8.6" />
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<PackageReference Include="Microsoft.Data.SqlClient" Version="5.2.2" />
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<PackageReference Include="Bogus" Version="35.0.1" />
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<PackageReference Include="AngleSharp" Version="0.17.1" />
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<PackageReference Include="Microsoft.AspNetCore.TestHost" Version="8.0.0" />

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