trace_ca6d269d1b9e491c8e61f3ef0dc40c46

This source file has a known vulnerability sink in it. Traverse the codebase and report the vulnerability. You can report multiple vulnerabilities. Start from extensions/qqbot/src/reply-dispatcher.ts and extensions/qqbot/src/utils/platform.ts. Trace how structured QQ Bot media payloads use payload.path for local file sends, whether the path is constrained to QQ Bot-owned media storage, and where file contents are read and forwarded to QQ Bot message APIs. Keep the analysis grounded in the vulnerable checkout.

{
  "executiveSummary": "The QQBot extension is vulnerable to arbitrary local file read/disclosure by design flaws in handling the structured media payloads. When processing messages starting with \"QQBOT_PAYLOAD:\" containing a media payload referencing a local file path, the `reply-dispatcher` directly reads the specified local file path and uploads it as an image, video, file or voice message to the target platform.\nThe application fails to properly constrain the `payload.path` to a designated sandbox or QQ Bot media storage directory. Although `normalizePath` strips the 'file://' scheme and expands paths starting with `~` and `resolveQQBotLocalMediaPath` tries to map missing local files onto designated folders, neither of these mechanisms restrict the root directory. This allows an attacker to furnish an arbitrary absolute local file path (like `/etc/passwd`) which bypasses `resolveQQBotLocalMediaPath` (because `fs.existsSync(normalized)` evaluates to true) and will be subsequently read using `readFileAsync` inside `handle[Media]Payload`. This file buffer and base64 encoded content is then sent using QQ Bot C2C APIs.",
  "reports": [
    {
      "title": "Unrestricted Arbitrary Local File Read in QQ Bot Media Payload",
      "severity": "HIGH",
      "summary": "Arbitrary Local File Disclosure via Structured Media Payload Path",
      "rootCauseAnalysis": "The root cause of this vulnerability is the lack of proper path validation. The payload path from untrusted inputs is passed through `normalizePath` and `resolveQQBotLocalMediaPath`. While `normalizePath` removes prefixes and escapes, it doesn’t limit directory traversal or absolute paths. `resolveQQBotLocalMediaPath` contains logic to map missing files to known directories, but deliberately fails open and skips this constraint for extant files directly returning the input file path if it exists on the system (`if (!isLocalPath(normalized) || fs.existsSync(normalized)) return normalized;`). This permits arbitrary local path strings to be successfully mapped and subsequently read.",
      "impact": "An attacker can read any file from the underlying server where the OpenClaw service is running that the OpenClaw process has permissions to access. Information disclosure of system files, credentials, configurations, and internal media data is possible.",
      "attackPath": "1. An attacker sends a properly formatted structured media payload prefixed with `QQBOT_PAYLOAD:` and specifying a `media` payload containing a `path` pointing to an arbitrary file on the filesystem (e.g., `/etc/passwd`).\n2. The payload handler parses the JSON payload.\n3. The type matching routes the payload either to `handleImagePayload`, `handleAudioPayload`, `handleVideoPayload` or `handleFilePayload`.\n4. In `resolveQQBotLocalMediaPath`, the normalized file path evaluates to true for `fs.existsSync(normalized)` due to the file actually existing on the OS.\n5. The unconstrained file path gets read by `readFileAsync` vi