Overview
The cybersecurity landscape is persistently threatened by the emergence of new vulnerabilities. One such vulnerability, identified as CVE-2024-53945, poses a significant risk to users of the KuWFi 4G AC900 LTE router version 1.0.13. This vulnerability allows an authenticated attacker to execute arbitrary OS commands with root privileges, potentially leading to full system compromise and data leakage.
This high-risk vulnerability is particularly critical due to its potential to enable remote access, such as enabling telnet. It is crucial that users, system administrators, and security professionals understand the implications of this vulnerability and take appropriate measures to mitigate its potential impact.
Vulnerability Summary
CVE ID: CVE-2024-53945
Severity: High (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: Low (Authenticated access)
User Interaction: None
Impact: Full system compromise, potential data leakage, remote access
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Product | Affected Versions
KuWFi 4G AC900 LTE router | 1.0.13
How the Exploit Works
The exploit takes advantage of command injection vulnerability on the HTTP API endpoints /goform/formMultiApnSetting and /goform/atCmd. An attacker with authenticated access to the router’s API can inject shell metacharacters into parameters such as ‘pincode’ and ‘cmds’. This allows the attacker to execute arbitrary OS commands with root privileges, leading to full system compromise, enabling remote access, and potentially leaking sensitive data.
Conceptual Example Code
This is a conceptual representation of how the vulnerability might be exploited. In this example, the attacker sends a malicious HTTP POST request to the /goform/atCmd endpoint:
POST /goform/atCmd HTTP/1.1
Host: router-ip
Content-Type: application/x-www-form-urlencoded
Cookie: sessionid=authenticated-session-id
pincode=1234; rm -rf /&
cmds=;telnetd&In this hypothetical example, the attacker injects OS commands (`rm -rf /&` and `telnetd&`) into the ‘pincode’ and ‘cmds’ parameters. The former command can lead to deletion of all files in the system, while the latter command starts a telnet daemon, enabling remote access.
Mitigation
Users of the affected KuWFi 4G AC900 LTE router version are advised to immediately apply the vendor’s patch to fix this vulnerability. In situations where the patch cannot be immediately applied, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. However, these are not long-term solutions and the patch should be applied as soon as possible to fully secure the system.