CVE-2025-6163 in A3002RU
Summary
by MITRE • 06/17/2025
A vulnerability was found in TOTOLINK A3002RU 3.0.0-B20230809.1615 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formMultiAP of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 06/23/2025
The vulnerability identified as CVE-2025-6163 represents a critical buffer overflow flaw within the TOTOLINK A3002RU router firmware version 3.0.0-B20230809.1615, specifically affecting the HTTP POST request handler component. This issue resides in the /boafrm/formMultiAP file which processes web-based configuration requests, making it a prime target for remote exploitation. The vulnerability manifests when an attacker manipulates the submit-url parameter within the HTTP POST request, triggering a buffer overflow condition that can compromise the device's memory integrity.
The technical nature of this flaw places it squarely within the CWE-121 category of buffer overflow conditions, where insufficient bounds checking allows attackers to write beyond allocated memory regions. The attack vector is remote, meaning malicious actors can exploit this vulnerability without physical access to the device, potentially enabling unauthorized access to the router's administrative interface. The buffer overflow creates opportunities for arbitrary code execution, privilege escalation, and complete system compromise. This vulnerability directly violates the principle of input validation and demonstrates poor memory management practices in the web application framework.
The operational impact of CVE-2025-6163 extends beyond simple device compromise, as it can enable attackers to establish persistent backdoors, redirect traffic through malicious proxies, or use the compromised router as a launch point for attacks against internal networks. The disclosure of exploit details to the public community accelerates the risk profile, as security researchers and malicious actors can readily leverage this vulnerability. This type of exploitation aligns with ATT&CK technique T1059.007 for command and script interpreter and T1071.004 for application layer protocol, as attackers can manipulate HTTP requests to execute malicious code within the router's memory space.
Mitigation strategies must include immediate firmware updates from TOTOLINK to address the buffer overflow vulnerability, alongside network segmentation to limit lateral movement if exploitation occurs. Network administrators should implement strict access controls and monitor for unusual HTTP traffic patterns that might indicate exploitation attempts. The implementation of web application firewalls and input validation controls can help detect and prevent malicious POST requests targeting this specific vulnerability. Additionally, regular security audits of network infrastructure components and maintaining updated threat intelligence feeds will help identify similar vulnerabilities in other network devices that may be susceptible to comparable buffer overflow attacks.