| 标题 | nanocoai nanoclaw <= 2.1.17 Improper Link Resolution Before File Access / Link Following (CWE-59) |
|---|
| 描述 | # Technical Details
A symlink-following arbitrary file write vulnerability exists in the `forwardAttachedFiles()` method in `src/modules/agent-to-agent/agent-route.ts` of NanoClaw (npm package `nanoclaw`).
NanoClaw's built-in agent-to-agent (A2A) attachment forwarding trusts the target inbox path. `forwardAttachedFiles()` hardens the source side (rejects unsafe message ids, refuses symlinked source outbox directories and files, resolves `realSrc` and checks containment under the canonical source outbox), but performs no equivalent `lstat()` or `realpath()` containment checks on the target inbox before calling `fs.mkdirSync()` and `fs.copyFileSync()`.
The vulnerable code:
```js
const targetInboxDir = path.join(sessionDir(target.agentGroupId, target.sessionId), 'inbox', target.messageId);
fs.mkdirSync(targetInboxDir, { recursive: true });
...
const dst = path.join(targetInboxDir, filename);
fs.copyFileSync(realSrc, dst); |
|---|
| 来源 | ⚠️ https://github.com/nanocoai/nanoclaw/issues/2828 |
|---|
| 用户 | Eric-a (UID 96353) |
|---|
| 提交 | 2026-08-11 14時52分 (1 月前) |
|---|
| 管理 | 2026-09-13 18時00分 (1 month later) |
|---|
| 状态 | 已接受 |
|---|
| VulDB条目 | 403309 [nanocoai NanoClaw 直到 2.1.17 Attachment agent-route.ts forwardAttachedFiles 权限提升] |
|---|
| 积分 | 20 |
|---|