type: queue-operation

operation: enqueue

content: 你是 engineering-security-engineer。请用中文回答：审查这段登录代码有什么安全漏洞？代码：const login = (user, pass) => { sql = 'SELECT * FROM users WHERE user=' + user + ' AND pass=' + pass; return db.query(sql); }


type: user

role: user

permissionMode: default

userType: external

entrypoint: sdk-cli

gitBranch: HEAD


content:
- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors ("from now on when X", "each time X", "whenever X", "before/after X") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. Also use for: permissions ("allow X", "add permission", "move permission to"), env vars ("set X=Y"), hook troubleshooting, or any changes to settings.json/settings.local.json files. Examples: "allow npm commands", "add bq permission to global settings", "move permission to user settings", "set DEBUG=true", "when claude stops show X". For simple settings like theme/model, suggest the /config command.
- keybindings-help: Use when the user wants to customize keyboard shortcuts, rebind keys, add chord bindings, or modify ~/.claude/keybindings.json. Examples: "rebind ctrl+s", "add a chord shortcut", "change the submit key", "customize keybindings".
- simplify: Review changed code for reuse, quality, and efficiency, then fix any issues found.
- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.
- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo). Omit the interval to let the model self-pace. - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. "check the deploy every 5 minutes", "keep running /babysit-prs"). Do NOT invoke for one-off tasks.
- claude-api: Build, debug, and optimize Claude API / Anthropic SDK apps. Apps built with this skill should include prompt caching. Also handles migrating existing Claude API code between Claude model versions (4.5 → 4.6, 4.6 → 4.7, retired-model replacements).
TRIGGER when: code imports `anthropic`/`@anthropic-ai/sdk`; user asks for the Claude API, Anthropic SDK, or Managed Agents; user adds/modifies/tunes a Claude feature (caching, thinking, compaction, tool use, batch, files, citations, memory) or model (Opus/Sonnet/Haiku) in a file; questions about prompt caching / cache hit rate in an Anthropic SDK project.
SKIP: file imports `openai`/other-provider SDK, filename like `*-openai.py`/`*-generic.py`, provider-neutral code, general programming/ML.
- init: Initialize a new CLAUDE.md file with codebase documentation
- review: Review a pull request
- security-review: Complete a security review of the pending changes on the current branch

type: attachment


type: message

role: assistant

type: thinking

thinking:
The user is asking me to review a piece of login code for security vulnerabilities. This is a classic SQL injection vulnerability demonstration. The user identified themselves as "engineering-security-engineer" and asked me to respond in Chinese.

The code is obviously vulnerable to SQL injection - it's directly concatenating user input into a SQL query without any sanitization or parameterization.

Let me provide a clear security analysis in Chinese.

service_tier: standard

speed: standard

type: assistant


type: text

text:
这段代码存在**严重的 SQL 注入漏洞**，是经典的教科书级反面示例。

## 主要漏洞

**1. 直接拼接用户输入（SQL 注入）**

```javascript
sql = 'SELECT * FROM users WHERE user=' + user + ' AND pass=' + pass;
```

用户输入的 `user` 和 `pass` 被直接拼接到 SQL 语句中，攻击者可以注入恶意 SQL 代码。

**攻击示例**：如果输入：
- `user = "' OR '1'='1"` → 绕过登录
- `pass = "'; DROP TABLE users; --"` → 删除整个用户表

**2. 密码明文比较**

密码以明文存储和比较，违反安全最佳实践。

---

## 修复建议

使用**参数化查询（Prepared Statements）**：

```javascript
const login = (user, pass) => {
  sql = 'SELECT * FROM users WHERE user = ? AND pass = ?';
  return db.query(sql, [user, pass]);
};
```

同时：
- 对密码使用**哈希加盐**（bcrypt/argon2）存储，而非明文
- 对输入进行**白名单验证**（如限制用户名格式）

---

## 总结

| 问题 | 严重性 |
|------|--------|
| SQL 注入 | 🔴 严重 |
| 密码明文存储 | 🔴 严重 |
| 无输入验证 | 🟠 高 |

这段代码**绝对不能**直接用于生产环境。


type: last-prompt

lastPrompt: 你是 engineering-security-engineer。请用中文回答：审查这段登录代码有什么安全漏洞？代码：const login = (user, pass) => { sql = 'SELECT * FROM users WHERE user=' + user + ' AND pass=' + pass; return db.query(sql); }