DollhouseMCP

# Session Notes - October 10, 2025 (3:00 PM - 4:00 PM) **Branch**: `fix/issue-1269-memory-injection-protection` **Duration**: ~1 hour **Outcome**: ✅ **COMPLETE** - Issue #1315 finalized, security audit fixed, PR #1313 merged to develop ## Summary Completed Issue #1315 implementation by fixing final 2 test failures, resolved low-priority security audit finding, and successfully merged PR #1313 to develop. All blockers cleared for future Phase 1 work on Issue #1314. ## Work Completed ### 1. Test Fixes for Issue #1315 (Commits: 2356924f) **Status**: 22/22 tests passing ✅ #### Problem Two tests failing in `Memory.injection.test.ts` due to format issues: 1. `should handle trust levels correctly on deserialization` 2. `should skip quarantined content on deserialization` #### Root Causes 1. **Type field mismatch**: Test data used `type: 'memory'` but `ElementType.MEMORY = 'memories'` 2. **Trust level case**: Test data used uppercase (`'UNTRUSTED'`) but constants use lowercase (`'untrusted'`) #### Fixes Applied ```typescript // Fix 1: Type field (line 162, 337) - type: 'memory' + type: 'memories' // Fix 2: Trust levels (line 173, 348) - trustLevel: 'UNTRUSTED' + trustLevel: 'untrusted' - trustLevel: 'QUARANTINED' + trustLevel: 'quarantined' ``` **Constants Reference** (`src/elements/memories/constants.ts:120-125`): ```typescript export const TRUST_LEVELS = { UNTRUSTED: 'untrusted', // ← lowercase VALIDATED: 'validated', TRUSTED: 'trusted', QUARANTINED: 'quarantined' // ← lowercase } ``` ### 2. Security Audit Fix (Commit: 0613ba25) **Finding**: DMCP-SEC-006 - Low priority audit logging issue in `constants.ts` #### Analysis Security scanner flagged `src/elements/memories/constants.ts` for missing audit logging, but this is a **false positive**: - File contains only type definitions and constant exports - No executable security operations - No user input processing #### Solution Added suppression entries in `src/security/audit/config/suppressions.ts`: ```typescript { rule: 'DMCP-SEC-006', file: 'src/elements/memories/constants.ts', reason: 'Constants file - contains only type definitions and constants, no security operations' }, // + 3 more path variants for CI environments ``` **Result**: Security audit now passes with **0 findings** (was 1 LOW) ### 3. PR #1313 Merge **Status**: ✅ MERGED to `develop` at 2025-10-10 19:52:48 UTC #### Pre-Merge Verification - ✅ All 14 CI checks passing - ✅ Issue #1315 complete (22/22 tests) - ✅ Security audit: 0 findings - ✅ SonarCloud: SUCCESS - ✅ CodeQL: SUCCESS - ✅ Docker builds: SUCCESS (amd64 + arm64) #### Merge Details - **Method**: Squash merge - **Branch deleted**: `fix/issue-1269-memory-injection-protection` - **Code changes**: +7,830 / -182 lines - **URL**: https://github.com/DollhouseMCP/mcp-server/pull/1313 #### What Was Merged 1. **Security Telemetry System** - `SecurityTelemetry` class with 24-hour rolling windows - Real-time attack metrics and SIEM export - 10 comprehensive telemetry tests 2. **Issue #1315 Implementation** - Non-blocking `Memory.addEntry()` - All entries created as `UNTRUSTED` - Removed 3 blocking validation methods - 22 injection protection tests passing 3. **Documentation** - `MEMORY_SECURITY_ARCHITECTURE.md` (540 lines) - `MEMORY_INJECTION_PROTECTION.md` (comprehensive guide) - 30+ documented attack patterns 4. **Related Issues Created** - #1309: Polyglot Attack Protection - #1310: Timing Attack Considerations - #1311: Context Confusion Detection - #1312: Minor Test Enhancements - #1314: Complete Memory Security Architecture - #1315: Remove Synchronous Validation ✅ ## Commits (This Session) ``` 2356924f - test: Fix remaining test format issues in Memory.injection.test.ts 0613ba25 - fix(security): Suppress DMCP-SEC-006 for memory constants file ``` ## Technical Details ### Test Failure Analysis **Original Error 1** (Trust level deserialization): ``` Expected: "untrusted" Received: "UNTRUSTED" ``` The test was using the constant name as a string instead of the constant value. **Original Error 2** (Quarantine skip): ``` Expected: 0 Received: 1 ``` Quarantined entry wasn't being skipped because the string case didn't match. ### Security Audit Deep Dive The DMCP-SEC-006 rule checks for security operations that lack audit logging. The `constants.ts` file was flagged because: 1. **Scanner logic**: Detects any file in security-sensitive paths 2. **False positive**: No runtime security operations in constants file 3. **Suppression strategy**: Used existing pattern of suppressing DMCP-SEC-004 for same file Multiple path variants needed because CI environments use different directory structures: - Local dev: `src/elements/memories/constants.ts` - CI absolute: `/home/runner/work/.../src/elements/memories/constants.ts` - CI relative: `elements/memories/constants.ts` ## Decision Points ### Should We Merge Before Phase 1? **Decision**: YES ✅ **Rationale**: 1. **Complete foundation**: PR #1313 is a working, tested implementation 2. **Incremental delivery**: Better than accumulating changes 3. **Risk management**: Longer PR open time = more merge conflict risk 4. **Safe architecture**: Non-blocking approach works without Phase 1 - All entries marked `UNTRUSTED` (conservative) - Display sandboxing prevents injection - Quarantine logic functional - Background validation is enhancement, not requirement ### Why Non-Blocking Is Safe The Issue #1315 implementation is production-safe because: - **Default state**: All new memories are `UNTRUSTED` until proven safe - **Display protection**: Untrusted content sandboxed with clear delimiters - **Load protection**: `QUARANTINED` entries skipped on deserialization - **Future enhancement**: Phase 1 background validation will upgrade trust levels automatically ## Next Session Priorities ### Issue #1314 Phase 1 Implementation **NEW SESSION** - Start fresh with these tasks: 1. **Add FLAGGED trust level constant** ```typescript export const TRUST_LEVELS = { VALIDATED: 'validated', UNTRUSTED: 'untrusted', FLAGGED: 'flagged', // ← NEW QUARANTINED: 'quarantined' } ``` 2. **Background validation service scaffold** - Create `BackgroundValidator` class - Async validation queue - Trust level update mechanism 3. **Pattern extraction logic** - Identify dangerous patterns in content - Extract for separate encrypted storage - Generate sanitized display versions 4. **Integration testing** - Test background validation updates - Verify trust level transitions - Ensure no performance impact ## Key Learnings ### 1. Constants File Organization The memory constants file (`constants.ts`) contains: - `MEMORY_CONSTANTS` object (size limits, defaults) - `TRUST_LEVELS` object (trust level values) - `MEMORY_SECURITY_EVENTS` object (event types) - Type exports (`TrustLevel`, `PrivacyLevel`, etc.) **Critical**: Always use the constant VALUES, not the constant NAMES as strings. ### 2. Security Audit Suppressions When adding suppressions: - Document why it's a false positive - Add multiple path variants for CI compatibility - Keep reasons descriptive (minimum 10 characters) - Group related suppressions together ### 3. Test Data Format Alignment Always verify test data matches actual constants: - Use TypeScript imports to get type safety - Check enum values vs string literals - Validate against source of truth (constants file) ## Files Modified (This Session) ``` test/__tests__/unit/elements/memories/Memory.injection.test.ts src/security/audit/config/suppressions.ts ``` ## Related Issues & PRs - **Issue #1269**: Memory injection protection (✅ COMPLETE) - **Issue #1314**: Complete memory security architecture (📋 NEXT) - **Issue #1315**: Remove synchronous validation (✅ COMPLETE) - **PR #1313**: Security telemetry (✅ MERGED) ## Metrics ### Test Coverage - Memory injection tests: 22/22 passing (100%) - Security telemetry tests: 10/10 passing (100%) - Overall test suite: All passing ### Security - Security audit findings: 0 (was 1 LOW) - SonarCloud issues: 0 critical/high - CodeQL alerts: 0 ### Code Quality - Lines added (PR #1313): +7,830 - Lines deleted (PR #1313): -182 - Net change: +7,648 lines - Documentation added: 540+ lines --- **End of session** - Ready for Issue #1314 Phase 1 in new session. **Handoff**: PR #1313 merged successfully, all blockers cleared, foundation ready for background validation implementation.