{"id":87173,"date":"2026-07-11T21:42:25","date_gmt":"2026-07-11T21:42:25","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2024-0297-critical-os-command-injection-vulnerability-in-totolink-n200re","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2024-0297-critical-os-command-injection-vulnerability-in-totolink-n200re\/","title":{"rendered":"CVE-2024-0297: Critical OS Command Injection Vulnerability in Totolink N200RE<\/strong>"},"content":{"rendered":"

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

A critical vulnerability, identified as CVE-2024-0297, has been discovered in Totolink N200RE 9.3.5u.6139_B20201216 firmware. This vulnerability, which lies in the UploadFirmwareFile function of \/cgi-bin\/cstecgi.cgi, can lead to Operating System (OS) command injection. It poses a significant risk to any system running the affected software, as it can potentially lead to system compromise or data leakage if exploited.<\/p>\n

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

CVE ID: CVE-2024-0297
\nSeverity: Critical (7.3 CVSS score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Totolink N200RE | 9.3.5u.6139_B20201216<\/p>\n

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

The vulnerability exists due to insufficient sanitization of the FileName argument in the UploadFirmwareFile function. This lack of sanitization allows for the injection of malicious OS commands. An attacker can manipulate this argument remotely, resulting in execution of arbitrary commands on the system with the privileges of the web server.<\/p>\n

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

An example of how the vulnerability might be exploited could be a malicious HTTP POST request to the vulnerable endpoint. The FileName argument can be manipulated to include OS commands which get executed on the server. It might look something like this:<\/p>\n

POST \/cgi-bin\/cstecgi.cgi HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nUploadFirmwareFile=;+rm+-rf+\/+&FileName=malicious_firmware.bin<\/code><\/pre>\n
In this example, the command `rm -rf \/` will be executed on the server, deleting all files on the system. This is purely a conceptual example and does not represent a real-world scenario.<\/p>\n
Recommendations<\/strong><\/p>\n
Users of the affected software are advised to apply the vendor patch as soon as possible. If the vendor patch is not available, temporary mitigation can be achieved by using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block attempts to exploit this vulnerability.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview A critical vulnerability, identified as CVE-2024-0297, has been discovered in Totolink N200RE 9.3.5u.6139_B20201216 firmware. This vulnerability, which lies in the UploadFirmwareFile function of \/cgi-bin\/cstecgi.cgi, can lead to Operating System (OS) command injection. It poses a significant risk to any system running the affected software, as it can potentially lead to system compromise or data […]<\/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":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-87173","post","type-post","status-publish","format-standard","hentry"],"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