{"id":37635,"date":"2025-05-13T00:26:11","date_gmt":"2025-05-13T00:26:11","guid":{"rendered":""},"modified":"2025-05-30T11:18:08","modified_gmt":"2025-05-30T17:18:08","slug":"cve-2025-4342-critical-buffer-overflow-vulnerability-in-d-link-dir-600l","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-4342-critical-buffer-overflow-vulnerability-in-d-link-dir-600l\/","title":{"rendered":"CVE-2025-4342: Critical Buffer Overflow Vulnerability in D-Link DIR-600L<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The cybersecurity industry has recently identified a critical vulnerability, CVE-2025-4342, affecting D-Link DIR-600L up to version 2.07B01. This vulnerability, classified as critical, has the potential to compromise systems and lead to data leakage, posing a significant security risk to users of these products.
\nEssentially, the vulnerability lies in the router’s function formEasySetupWizard3 and can be exploited remotely by manipulating the host argument to cause a buffer<\/a> overflow. As these products are no longer supported by the vendor, this discovery underlines the importance of maintaining updated and supported devices.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-4342
\nSeverity: Critical, CVSS 8.8
\nAttack Vector: Remote
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise and data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

D-Link DIR-600L<\/a> | Up to 2.07B01<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The exploit takes advantage of an overflow buffer<\/a> in the formEasySetupWizard3 function of D-Link DIR-600L routers. By manipulating the host argument, an attacker can overflow the buffer<\/a>, leading to undefined behavior in the system. This could potentially allow an attacker to execute arbitrary code<\/a>, enabling them to compromise the system and possibly leak sensitive data.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

The following is a conceptual example of how a malicious payload might trigger the vulnerability<\/a>:<\/p>\n

POST \/formEasySetupWizard3 HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ \"host\": \"A long string that causes buffer overflow...\" }<\/code><\/pre>\n
In this example, the “host” argument is filled with a longer string than the buffer can handle, causing an overflow. This could lead to undefined system<\/a> behavior, potentially opening doors for further exploits.
\nTo mitigate this vulnerability, users are advised to apply vendor patches. In cases where the product is no longer supported by the manufacturer, as is the case with D-Link DIR-600L, users can use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation strategy. However, the best course of action would be to upgrade to a supported product.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The cybersecurity industry has recently identified a critical vulnerability, CVE-2025-4342, affecting D-Link DIR-600L up to version 2.07B01. This vulnerability, classified as critical, has the potential to compromise systems and lead to data leakage, posing a significant security risk to users of these products. Essentially, the vulnerability lies in the router’s function formEasySetupWizard3 and can […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[86],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-37635","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t