fkie_cve-2025-52573

iOS Simulator MCP Server (ios-simulator-mcp) is a Model Context Protocol (MCP) server for interacting with iOS simulators. Versions prior to 1.3.3 are written in a way that is vulnerable to command injection vulnerability attacks as part of some of its MCP Server tool definition and implementation. The MCP Server exposes the tool `ui_tap` which relies on Node.js child process API `exec` which is an unsafe and vulnerable API if concatenated with untrusted user input. LLM exposed user input for `duration`, `udid`, and `x` and `y` args can be replaced with shell meta-characters like `;` or `&&` or others to change the behavior from running the expected command `idb` to another command. When LLMs are tricked through prompt injection (and other techniques and attack vectors) to call the tool with input that uses special shell characters such as `; rm -rf /tmp;#` and other payload variations, the full command-line text will be interepted by the shell and result in other commands except of `ps` executing on the host running the MCP Server. Version 1.3.3 contains a patch for the issue.

GHSA-6f6r-m9pv-67jw — iOS Simulator MCP Command Injection allowed via exec API

Affected: npm: ios-simulator-mcp

# Command Injection in MCP Server

The MCP Server at https://github.com/joshuayoes/ios-simulator-mcp/ is written in a way that is vulnerable to command injection vulnerability attacks as part of some of its MCP Server tool definition and implementation.

## Vulnerable tool

The MCP Server exposes the tool `ui_tap` which relies on Node.js child process API `exec` which is an unsafe and vulnerable API if concatenated with untrusted user input.

LLM exposed user input for `duration`, `udid`, and `x` and `y` args can be replaced with shell meta-characters like `;` or `&&` or others to change the behavior from running the expected command `idb` to another command.

Vulnerable line of code: https://github.com/joshuayoes/ios-simulator-mcp/blob/main/src/index.ts#L166-L207

```js server.tool( "ui_tap", "Tap on the screen in the iOS Simulator", { duration: z.string().optional().describe("Press duration"), udid: z .string() .optional() .describe("Udid of target, can also be set with the IDB_UDID env var"), x: z.number().describe("The x-coordinate"), y: z.number().describe("The x-coordinate"), }, async ({ duration, udid, x, y }) => { try { const actualUdid = await getBootedDeviceId(udid); const durationArg = duration ? `--duration ${duration}` : ""; const { stderr } = await execAsync( `idb ui tap --udid ${actualUdid} ${durationArg} ${x} ${y} --json` );

```

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fkie_cve-2025-52573

GHSA-6f6r-m9pv-67jw — iOS Simulator MCP Command Injection allowed via exec API