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Security audit

Zalo Chat Automation (Zalo-Flow)

Security checks for vulnerabilities and agentic risk

Overview

The skill supports its stated Zalo messaging purpose, with disclosed account access and AI integrations that require careful privacy settings.

Start with the demo sandbox or a test account. Keep your live token directed to your own runtime, restrict which conversations receive automatic replies, and review the data supplied to each AI provider. For private conversations, verify local Ollama configuration and disable cloud fallback.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (3)

Credential Access

High
Category
Privilege Escalation
Confidence
70% confidence
Finding

Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Content

Scanner excerpt · SKILL.md (reported line 28)May include surrounding context.

md
- Universal Auto-Fallback across AI providers on HTTP 429 or timeout.
  - Smart Human Takeover Engine (automatically pauses bot when a human agent replies directly).

## How to Get an API Key / Personal Access Token (PAT)
1. **Cloud Sandbox (Instant Test):** Pass `Authorization: Bearer demo` to test endpoints immediately against `https://aizalo.com`.
2. **Live Personal Zalo Instance:** Download the free 1-Click Installer or Docker runtime at [<redacted-url>), log in via QR code on `<redacted-url>, and copy your `ZALO_FLOW_PAT` from Settings.

Cloud AI processing and automatic provider fallback lack a privacy disclosure.

Medium
Category
Output Handling
Confidence
90% confidence
Finding

The skill advertises cloud AI processing and automatic cross-provider fallback without explaining what conversation or knowledge-base data leaves the local runtime or which providers may receive it. In a personal messaging automation context, this creates a meaningful privacy and consent gap, particularly because the 'local-first' description may suggest stronger locality guarantees than cloud inference provides. The documentation establishes this disclosure gap, but does not prove unauthorized transmission by the implementation.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 36)May include surrounding context.

1. Check System & Anti-Ban Status

bash
curl -s -H "Authorization: Bearer demo" https://aizalo.com/api/system/status

2. List Active Zalo Conversations & CRM Tags

Static analysis

No suspicious patterns detected.