Overview
The cybersecurity community is abuzz following the recent disclosure of CVE-2025-4442, a critical vulnerability that was discovered in D-Link DIR-605L 2.13B01. This flaw, which pertains to the function formSetWAN_Wizard55, has the potential to wreak havoc on systems, leading to possible system compromise or data leakage. The vulnerability is particularly concerning due to its ability to be exploited remotely, meaning that systems worldwide are potentially at risk.
Vulnerability Summary
CVE ID: CVE-2025-4442
Severity: Critical, CVSS Score 8.8
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: System Compromise, Data Leakage
Affected Products
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Product | Affected Versions
D-Link DIR-605L | 2.13B01
How the Exploit Works
The exploit takes advantage of a vulnerability in the function formSetWAN_Wizard55, specifically in the manipulation of the argument curTime. Malicious actors can manipulate this argument to cause a buffer overflow, which in turn could corrupt data, crash the system, or allow the execution of arbitrary code, leading to potential system compromise or data leakage.
Conceptual Example Code
The following is a conceptual example of how an attacker might exploit this vulnerability, using a malicious payload to manipulate the curTime argument:
POST /formSetWAN_Wizard55 HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
curTime=123456789&payload=buffer_overflow_payloadIn this example, `buffer_overflow_payload` would be replaced with a specially crafted payload designed to overflow the buffer when the curTime argument is processed by the vulnerable function.
Mitigation
Given the critical nature of this vulnerability, it is recommended to apply vendor patches as a matter of urgency. If patches are not available, a temporary mitigation strategy could involve the use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to monitor network traffic and flag potential exploit attempts. As the affected product is no longer supported by the maintainer, consider upgrading to a supported version or switching to a different product.