Overview
The cybersecurity landscape is constantly evolving, with numerous vulnerabilities being discovered daily in various software and hardware systems. One such critical vulnerability, identified as CVE-2025-5734, has been found in the TOTOLINK X15 1.0.0-B20230714.1105. This vulnerability resides in the HTTP POST Request Handler of the file /boafrm/formWlanRedirect and can be exploited remotely, making it a significant threat to the users of the affected product. It is critical due to its potential to compromise the system or lead to data leakage.
Vulnerability Summary
CVE ID: CVE-2025-5734
Severity: Critical, CVSS score 8.8
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System Compromise, Data Leakage
Affected Products
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Product | Affected Versions
TOTOLINK X15 | 1.0.0-B20230714.1105
How the Exploit Works
The CVE-2025-5734 vulnerability exploits a flaw in the handling of HTTP POST requests by the component /boafrm/formWlanRedirect in TOTOLINK X15. Specifically, the manipulation of the argument redirect-url can lead to a buffer overflow condition. Buffer overflow is a common exploit where an attacker overruns the buffer’s boundary and overwrites adjacent memory locations, potentially leading to system crashes, incorrect data manipulation, or malicious code execution.
Conceptual Example Code
An example of how the vulnerability might be exploited is provided below. This is a conceptual example and not an actual exploit code.
POST /boafrm/formWlanRedirect HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
redirect-url=AAAAAAAAA... // long string of "A"s that causes buffer overflowIn this example, the attacker sends a POST request to the /boafrm/formWlanRedirect endpoint with an excessively long string of “A”s as the redirect-url parameter. This string overflows the buffer, potentially leading to malicious consequences.
Please note that this is a simplified example, and actual exploit code would likely be more complex, potentially including shellcode that takes advantage of the overflow to execute arbitrary commands on the system.