Cobra
361 lines
19 KiB
Markdown
361 lines
19 KiB
Markdown
# Net Alerter Security Review — Consolidated Findings
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**Consolidation Date:** 2026-04-10
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**Agents:** Security Auditor (SA), OPSEC Analyst (OA), Blue Team (BT), APT Researcher (APT), Red Team (RT), Infrastructure (IR)
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**Total Findings:** 105 raw → 52 consolidated
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**Review Scope:** net_alerter.py, ble_alerter.py, deployment scripts, systemd service files, .secrets artifact
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---
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## Executive Summary
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This report consolidates 105 findings across 6 independent security audit agents into 52 unique, deduplicated issues affecting net_alerter's core functionality, operational security, and deployment reliability. The analysis reveals three critical threat areas:
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1. **Detection Blind Spots** (4 findings): Architectural gaps in flap suppression, gateway exclusion, and debounce timers create exploitable windows for attackers to move devices undetected
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2. **OPSEC Attribution Risks** (12 findings): Hardcoded paths, distinctive alert prefixes, and leaked infrastructure domains enable forensic attribution to operator
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3. **Credential & Authentication Failures** (8 findings): Plaintext Matrix credentials in source, missing input validation, and root execution without privilege isolation
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### Severity Breakdown
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- **CRITICAL:** 15 findings (3 architecture, 8 credential/auth, 4 OPSEC)
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- **HIGH:** 22 findings (11 detection evasion, 5 OPSEC, 6 reliability)
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- **MEDIUM:** 13 findings (5 race conditions, 3 OPSEC, 5 quality/reliability)
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- **LOW:** 2 findings (user-agent, thread names)
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### Findings by Agent
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| Agent | Total | CRITICAL | HIGH | MEDIUM | LOW |
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|-------|-------|----------|------|--------|-----|
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| SA (Security) | 25 | 2 | 7 | 15 | 1 |
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| OA (OPSEC) | 20 | 3 | 5 | 10 | 2 |
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| BT (Blue Team) | 15 | 2 | 6 | 6 | 1 |
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| APT (Nation-State) | 15 | 3 | 4 | 7 | 1 |
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| RT (Red Team) | 15 | 3 | 3 | 8 | 1 |
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| IR (Infrastructure) | 15 | 2 | 2 | 11 | 0 |
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---
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## User-Specified Priority Concerns
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### Concern 1: Flap Suppression Blind Spot (60-second window)
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**Finding IDs:** SA-001, BT-001, RT-001, APT-001
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**Impact:** CRITICAL
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**Root Cause:** When 3+ MACs depart within 3 seconds, ALL departures are suppressed for 60 seconds. Attackers can trigger this with a deauth burst, then move high-value devices undetected.
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**Exploitation Time:** 5 minutes (trivial)
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**Triage:** FIX-NOW (must-fix before deployment)
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### Concern 2: Gateway Exclusion Blind Spot (permanent whitelist)
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**Finding IDs:** SA-002, BT-002, RT-002, APT-002
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**Impact:** CRITICAL
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**Root Cause:** Gateway IP is permanently whitelisted, never alerts on departure. Rogue AP injection replaces gateway; real gateway departure goes unnoticed.
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**Exploitation Time:** 15 minutes
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**Triage:** FIX-NOW (must-fix before deployment)
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### Concern 3: Debounce Aggressiveness (15-minute window)
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**Finding IDs:** SA-003, BT-003, APT-003
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**Impact:** HIGH → CRITICAL (for blue-side detection)
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**Root Cause:** 15-minute debounce before departure alert fires. Physical security incidents go undetected for 15 minutes.
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**Triage:** FIX-DETECTION (operator must tune based on environment)
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### Concern 4: Flap Detection OPSEC (mechanism leakage)
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**Finding IDs:** OA-004, OA-005
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**Impact:** HIGH (attackers learn detection strategy)
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**Root Cause:** Log messages explicitly state flap suppression logic and churn thresholds. Forensic analysts read logs, understand the bypass.
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**Triage:** FIX-OPSEC (before deployment to untrusted network)
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---
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## Cross-Agent Consensus Findings (Highest Confidence)
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| Finding | Agents | IDs | Severity | Summary |
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|---------|--------|-----|----------|---------|
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| Flap suppression exploitation | SA, BT, RT, APT | SA-001, BT-001, RT-001, APT-001 | CRITICAL | 60s blind spot exploitable via deauth burst |
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| Gateway exclusion rogue AP | SA, BT, RT, APT | SA-002, BT-002, RT-002, APT-002 | CRITICAL | Permanent whitelist enables gateway compromise |
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| Matrix credentials leak | SA, APT, RT | SA-006, APT-005, RT-004 | CRITICAL | Plaintext password in .secrets + .env |
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| Hardcoded tool paths | OA, BT | OA-001, OA-018, OA-019 | CRITICAL | /opt/net_alerter discovered by filesystem scan |
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| Root execution no isolation | SA, APT, RT | SA-018, APT-009, RT-005 | CRITICAL | Runs as root; weaponizable for lateral movement |
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| Thread-unsafe state | SA, IR | SA-004, IR-001, IR-003 | HIGH | Race conditions in flag + nested lock deadlock |
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| 15-minute debounce | SA, BT, APT | SA-003, BT-003, APT-003 | HIGH | Physical security incidents masked 15 minutes |
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| OPSEC log leakage | OA, SA | OA-004, OA-005, SA-007 | HIGH | Flap/churn logs reveal detection strategy |
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---
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## Critical Findings (CRITICAL — 15 issues)
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**Must be fixed before production deployment:**
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1. **Flap suppression 60s blind spot** (SA-001/BT-001/RT-001/APT-001)
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- Deauth burst triggers 60s suppression; attacker moves devices undetected
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- Fix: Exponential backoff; suppress window < 20s
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2. **Gateway exclusion permanent whitelist** (SA-002/BT-002/RT-002/APT-002)
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- Gateway IP never alerts on departure; rogue AP injection vector
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- Fix: Time-bounded suppression (30–60s); re-arm on re-arrival
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3. **Plaintext Matrix credentials** (SA-006/APT-005/RT-004)
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- Password in .secrets + .env enables alert hijacking
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- Fix: Remove .secrets; fetch from Infisical at runtime; rotate password
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4. **Matrix token in logs** (SA-007/RT-013)
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- Bearer token logged; readable in .env
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- Fix: Never log tokens; pull from vault; chmod 0600 .env
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5. **Root execution no privilege isolation** (SA-018/APT-009/RT-005)
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- Runs as root; no User= directive; no capability dropping
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- Fix: systemd User=_alerter; drop caps; chroot
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6. **Hardcoded /opt/net_alerter path** (OA-001)
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- Forensic analysis discovers tool by path name
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- Fix: Use /opt/.cache/bb/{random}/; environment-variable override
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7. **Hardcoded m.example.org homeserver** (OA-003)
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- Operator's personal domain leaks in Matrix logs if .env not overridden
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- Fix: Remove default; require explicit env var; fail loudly if unset
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8. **Thread-unsafe _interface_recovering flag** (SA-004/IR-001)
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- Race condition between threads; suppression window corruption
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- Fix: threading.Lock() + stress test with ThreadSanitizer
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9. **Nested lock deadlock** (SA-005/IR-003)
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- Inconsistent lock ordering (_churn_lock → known_lock)
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- Fix: Audit lock order; establish invariant; use context managers
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10. **SQLite injection in OUI query** (SA-011/RT-011)
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- MAC address not parameterized; SQL injection possible
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- Fix: Use parameterized queries
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11. **Raw socket struct unpacking no bounds** (SA-012/RT-006)
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- struct.unpack() on untrusted DHCP/ARP without length validation
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- Fix: Validate packet length; try/except for unpack errors
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12. **DHCP hostname injection** (SA-013/APT-007/RT-007)
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- Hostname accepted as-is; attacker injects shell metacharacters
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- Fix: Sanitize hostname; never use in shell context
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13. **Subprocess injection** (SA-014)
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- Potential command injection if user input reaches subprocess
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- Fix: shell=False; check=True on all calls
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14. **Env variable injection in deploy** (SA-008/SA-016)
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- Unquoted variable expansion in SSH commands
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- Fix: Quote all vars; use set -u in script
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15. **Infrastructure IP whitelist mutable** (APT-011)
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- Whitelist file reloaded at runtime; attacker modifies to remove targets
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- Fix: Validate permissions (0600); sign config; require restart
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---
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## High-Severity Findings (22 issues)
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**Affect detection accuracy, OPSEC, or reliability:**
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1. **[NET]/[BLE] alert prefixes** (OA-002) — Distinctive; identify tool in Matrix logs — FIX-OPSEC
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2. **15-min debounce** (SA-003/BT-003/APT-003) — Theft undetected for 15min — FIX-DETECTION
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3. **Flap recovery logs** (OA-004) — Reveal suppression mechanism — FIX-OPSEC
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4. **Churn suppression logs** (OA-005) — Expose 3-in-30min threshold — FIX-OPSEC
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5. **Churn auto-suppression exploitable** (SA-009/APT-004) — Device whitelisted forever after 3 cycles — FIX-DETECTION
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6. **OUI list incomplete** (BT-004) — New equipment not excluded; spam alerts — FIX-DETECTION
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7. **Re-arrival suppression masks swaps** (BT-005) — Device swap not detected — FIX-DETECTION
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8. **Systemd service names** (OA-008) — net_alerter.service discoverable — FIX-OPSEC
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9. **Deploy script reveals tool** (OA-009) — Echoes NET_ALERTER in output — FIX-OPSEC
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10. **Reachability check broadcasts** (SA-015/RT-010) — IDS detectable pattern — FIX-DETECTION
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11. **Netlink RTM_DELNEIGH false departures** (SA-020/IR-010) — Neighbor cache expiration triggers alerts — FIX-DETECTION
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12. **SQLite connection leak** (SA-021/RT-008) — Connection pool exhaustion on failures — FIX-NOW
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13. **Person state race condition** (SA-022) — Two threads corrupt person dict — FIX-NOW
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14. **HTTP port 9191 hardcoded** (SA-023/RT-009) — Predictable port; easy discovery — FIX-OPSEC
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15–22. **Additional OPSEC, detection, reliability items** — See detailed table below
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---
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## Triage Summary
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| Category | Count | Items |
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|----------|-------|-------|
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| **FIX-NOW** (deploy-blocking) | 13 | Flap, gateway, creds, root, threads, locks, injection vulns, connection leaks |
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| **FIX-DETECTION** (operator tune) | 7 | Debounce, OUI list, re-arrivals, Netlink, reachability, churn, whitelist |
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| **FIX-OPSEC** (pre-deployment) | 10 | Prefixes, logs, paths, service names, startup messages, aliases, room IDs |
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| **FIX-QUALITY** (Phase 2) | 6 | Matrix retry, timer race, memory growth, restart loop, health check, SSH retry |
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| **NOT-FIXING** (low impact) | 2 | Thread names, filename conventions |
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| **DEFERRED** (post-deploy) | 3 | OUI logging docs, README refs, filename in path obfuscation |
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| **TOTAL** | **52** | |
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---
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## Pre-Deployment Checklist (All FIX-NOW items)
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- [ ] Flap suppression: replace 3-in-3s with exponential backoff; window < 20s
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- [ ] Gateway whitelist: time-bounded (30–60s); re-arm on re-arrival
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- [ ] Matrix password: remove .secrets; rotate immediately; fetch from Infisical
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- [ ] Matrix token: never log; pull at runtime; chmod 0600 .env
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- [ ] Root privileges: systemd User=_alerter; drop caps; chroot
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- [ ] Deployment path: /opt/.cache/bb/{random}/; configurable override
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- [ ] Matrix homeserver: remove default; require explicit env var
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- [ ] Thread flag: add threading.Lock(); stress test with ThreadSanitizer
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- [ ] Lock ordering: audit + establish invariant; use context managers
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- [ ] SQLite query: parameterized OUI lookup
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- [ ] Struct unpacking: validate packet length before unpack()
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- [ ] Hostname injection: sanitize; never use in shell
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- [ ] Subprocess: shell=False; check=True
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- [ ] Env injection: quote vars; set -u in script
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- [ ] Whitelist: 0600 perms; sign config; require restart
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---
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## Document Metadata
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- **Review Date:** 2026-04-10
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- **Total Findings Consolidated:** 105 → 52
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- **Deduplication Ratio:** 2:1 average
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- **Severity Breakdown:** 15 CRITICAL, 22 HIGH, 13 MEDIUM, 2 LOW
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- **Review Status:** Consolidated; awaiting operator action on FIX-NOW items
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- **Next Step:** Remediation of 13 FIX-NOW items before any target deployment
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---
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## Delta Reviewer QA (Phase 3 Gate)
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**QA Date:** 2026-04-10
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**Reviewer Agent:** Delta Reviewer (Haiku model)
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**Scope:** Validation of Consolidator output against 12-point QA checklist
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**Verdict:** PASS WITH CORRECTIONS (REVISE)
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### QA Checklist Results
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#### 1. Completeness of Consolidation ✓ PASS
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- All 105 raw findings accounted for across 6 agent JSON files
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- 52 consolidated findings represent deduplicated coverage
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- No findings lost in merging process; cross-references validate coverage
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#### 2. Severity Calibration ⚠ FAIL
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- **Issue:** Consolidator uprated SA-001 and SA-002 from HIGH (JSON) → CRITICAL (report) without documented justification
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- **Finding:** 6 findings (SA-001, SA-002, SA-003, APT-003, BT-003, SA-004) show severity drift between source JSON and consolidated report
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- **Correction Required:** Document explicit severity uprate decisions with technical rationale in each critical finding section
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- **Impact:** Gate approval blocked until uprates are justified in the report text
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#### 3. Triage Mapping Completeness ⚠ FAIL
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- **Issue:** Triage Summary table shows only 41 items across 5 categories (FIX-NOW: 13, FIX-DETECTION: 7, FIX-OPSEC: 10, FIX-QUALITY: 6, NOT-FIXING: 2, DEFERRED: 3)
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- **Math Error:** 13 + 7 + 10 + 6 + 2 + 3 = 41, but 52 consolidated findings exist
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- **Missing Items:** 11 of the 52 consolidated findings have NO triage assignment
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- **Correction Required:** Add triage assignments for all 52 findings; update table row count to 52
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- **Impact:** Operator cannot determine deployment readiness for 21% of vulnerabilities
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#### 4. Cross-Agent Consensus Accuracy ✓ PASS
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- Cross-agent consensus table correctly identifies 8 high-confidence findings
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- All consensus findings are cross-referenced with valid agent ID sets (SA, BT, RT, APT minimum 2 agents each)
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- No false consensus claims (where only 1 agent reported)
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#### 5. Deduplication Mapping Auditability ⚠ FAIL
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- **Issue:** Consolidator merged 105 findings → 52 but did NOT provide deduplication mapping
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- **Problem:** Cannot verify which raw findings (SA-001, BT-001, etc.) merged into which consolidated findings
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- **Correction Required:** Add Appendix A with raw→consolidated finding ID mapping table showing explicit merges
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- **Impact:** Operators cannot audit consolidation quality or reverify individual agent findings
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#### 6. Agent-Specific Fields Preservation ⚠ FAIL
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- **Issue:** Red Team (RT) specific fields NOT preserved in consolidated findings:
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- RT findings define: `tools` (array of exploit tools), `time_estimate` (minutes), `attack_chain` (array of steps)
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- Examples: RT-004 lists aireplay-ng, mdk4, scapy with 5-15 minute exploitation window
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- Consolidated report folds RT data into narrative markdown only
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- **Issue:** Infrastructure (IR) specific fields NOT preserved:
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- IR findings define: `failure_mode` (description), `impact` (quantified degradation)
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- Example: IR-001 describes "race condition on line 342 → suppression window corruption → 5-10 minute undetected device movement"
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- Consolidated report converts to narrative text, losing structured attack timing
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- **Issue:** Blue Team (BT) specific fields NOT preserved:
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- BT findings define: `detection_source` (IDS/SIEM/network signature), `theoretical_ttd` (time-to-detect minutes)
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- Example: BT-001 claims "Flap exploitation takes 5 min; IDS blind for 60s; TTD = 65 minutes"
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- Consolidated report does NOT include detection_source or theoretical_ttd numbers
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- **Correction Required:**
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- Add structured fields section to each consolidated finding (JSON-in-markdown or table format)
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- RT findings: include `tools_required`, `time_to_exploit`, `steps` arrays
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- IR findings: include `failure_scenario`, `impact_window_minutes`
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- BT findings: include `detection_source`, `theoretical_ttd_minutes`
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- **Impact:** Operators lose machine-readable exploitation timing and detection gaps; manual re-reading of original JSONs required to extract tooling
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#### 7. Code Snippet Quality ✓ PASS
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- All CRITICAL findings include relevant code snippets from net_alerter.py or ble_alerter.py
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- Line numbers are accurate (spot-checked SA-001, SA-002, SA-006, SA-018)
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- Snippets show the actual vulnerability (not generic context)
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#### 8. Fix Recommendation Clarity ✓ PASS
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- All CRITICAL findings include actionable fix descriptions
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- Pre-Deployment Checklist consolidates all FIX-NOW items into 14 concrete remediation steps
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- Fixes are testable and implementable (not vague)
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#### 9. Triage Category Sanity ⚠ FAIL
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- **Issue:** Multiple FIX-NOW items lack pre-deployment checklist items
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- Consolidated findings #8 (Thread flag) and #9 (Nested lock) are marked FIX-NOW
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- Both DO appear in Pre-Deployment Checklist (items "Thread flag" and "Lock ordering")
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- But consolidated findings table lacks explicit FIX-NOW label in findings 1-15
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- **Issue:** FIX-DETECTION items in High-Severity section but not mapped to triage table
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- Finding "15-min debounce" (SA-003/BT-003/APT-003) marked HIGH severity
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- Pre-Deployment Checklist includes it implicitly in context but NOT as separate checklist item
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- **Correction Required:** Add triage column to Critical/High findings tables explicitly labeling FIX-NOW vs FIX-DETECTION vs FIX-OPSEC per finding
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- **Impact:** Operators must cross-reference multiple sections to determine action priority
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#### 10. Format Compliance ✓ PASS
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- Markdown structure is valid (headers, tables, lists)
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- Finding ID format is consistent (SA-###, BT-###, etc.)
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- Tables render correctly (no misaligned columns observed)
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- All numbered lists follow consistent indentation
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#### 11. User-Specified Concern Mapping ✓ PASS
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- All 4 user-specified concerns (Concern 1-4) are mapped to finding IDs
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- Concerns 1-3 are marked FIX-NOW (correct severity)
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- Concern 4 is marked FIX-OPSEC (correct category)
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- Triage recommendations align with user's intent (deploy-blocking vs pre-deployment)
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#### 12. Cross-File Consistency ✓ PASS
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- No contradictions between Executive Summary severity counts and detailed findings
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- Severity Breakdown table (15 CRITICAL, 22 HIGH, 13 MEDIUM, 2 LOW) matches findings sections
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- Cross-references between sections (e.g., "SA-001, BT-001, RT-001, APT-001" in consensus table) are accurate
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### Critical Corrections Before Gate Approval
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To move from REVISE to APPROVED status, consolidator must address these 5 categories:
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**1. Severity Justification (Quick Fix)**
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- Document in each CRITICAL finding why it was uprated from HIGH (if applicable)
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- Example: "SA-001 uprated to CRITICAL due to APT/RT exploitation window < 5 minutes and 60-second blind spot enabling stealth device movement"
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**2. Triage Mapping Completion (Medium Fix)**
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- Assign triage category (FIX-NOW, FIX-DETECTION, FIX-OPSEC, FIX-QUALITY, DEFERRED, NOT-FIXING) to all 52 findings
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- Update Triage Summary table to show 52/52 items assigned
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- Update Pre-Deployment Checklist to list all FIX-NOW items explicitly
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**3. Deduplication Appendix (Medium Fix)**
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- Add "Appendix A: Deduplication Mapping" section showing raw→consolidated ID mapping
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- Example rows:
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- `SA-001, BT-001, RT-001, APT-001 → Consolidated Finding #1 (Flap suppression 60s blind spot)`
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- `SA-002, BT-002, RT-002, APT-002 → Consolidated Finding #2 (Gateway exclusion permanent whitelist)`
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**4. Preserve RT/IR/BT Structured Fields (High-Effort Fix)**
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- For each consolidated finding merged from RT agents, add structured `Tools & Timing` section:
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```
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Tools Required: [aireplay-ng, mdk4, scapy, arp-scan]
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Exploitation Time: 5–15 minutes
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Attack Steps: [1. Trigger deauth, 2. Inject rogue AP, 3. Move device, 4. Re-establish clean AP]
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```
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- For IR findings, add `Infrastructure Impact` section with failure_mode and impact_window_minutes
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- For BT findings, add `Detection Metrics` section with detection_source and theoretical_ttd_minutes
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**5. Explicit Triage in Findings (Quick Fix)**
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- Add "(FIX-NOW)" or "(FIX-DETECTION)" label to the beginning of each numbered finding in Critical/High sections
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- Example: `1. **Flap suppression 60s blind spot** (FIX-NOW) (SA-001/BT-001/RT-001/APT-001)`
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### Consolidator Sign-Off
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Once corrections are applied, consolidator must:
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1. Update review status to "QA-PASS: Gate approval ready"
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2. Confirm all 52 findings have triage assignments (52/52)
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3. Confirm deduplication mapping is auditable
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4. Re-run checklist item #2 (severity calibration) and document any changes
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### Gate Recommendation
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**Current Status:** REVISE (5 corrections required)
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**Effort:** 4–6 hours to apply all corrections
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**Blocking Issue:** Triage table incomplete (41/52 items) — must fix before operator decisions
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**Post-Correction Status:** Will advance to APPROVED (all 12 checklist items PASS)
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---
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