CVE-2024-9782 in DIR-619L B1
Summary
by MITRE • 10/10/2024
A vulnerability was found in D-Link DIR-619L B1 2.06. It has been declared as critical. This vulnerability affects the function formEasySetupWWConfig of the file /goform/formEasySetupWWConfig. The manipulation of the argument curTime leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 07/15/2026
This critical vulnerability in D-Link DIR-619L B1 firmware version 2.06 represents a severe buffer overflow flaw within the web interface administration system. The vulnerability specifically resides in the formEasySetupWWConfig function located at /goform/formEasySetupWWConfig, where the curTime parameter is improperly handled, creating an exploitable condition that allows remote attackers to execute arbitrary code on the affected device. The buffer overflow occurs when the application fails to properly validate or limit the length of user-supplied input through the curTime argument, enabling attackers to overwrite adjacent memory locations and potentially gain full system control.
The technical exploitation of this vulnerability follows established patterns documented in CWE-121, which describes buffer overflow conditions where insufficient bounds checking allows attackers to write beyond allocated memory regions. This particular implementation flaw creates a remote code execution vector that can be triggered through web-based attacks without requiring physical access or authentication credentials. The attack surface is particularly concerning as it operates entirely over the network interface, allowing malicious actors to compromise devices from any location with internet connectivity. The disclosure of public exploits increases the risk profile significantly, as demonstrated by ATT&CK technique T1210 which covers exploitation of remote services through buffer overflow vulnerabilities.
The operational impact of this vulnerability extends beyond simple device compromise, potentially enabling attackers to establish persistent backdoors, exfiltrate sensitive network information, or use compromised devices as launching points for further attacks within the local network. Network administrators face significant risks including unauthorized access to internal network resources, data breaches, and potential use in botnet formations. The router's role as a primary gateway device makes this vulnerability particularly dangerous as it could provide attackers with unrestricted access to all traffic passing through the network, potentially exposing connected devices to additional threats.
Mitigation strategies must prioritize immediate firmware updates from D-Link to address the identified buffer overflow condition, while network segmentation should be implemented to limit potential attack surfaces. Security controls should include disabling unnecessary web management interfaces, implementing strict firewall rules, and monitoring for unusual traffic patterns that might indicate exploitation attempts. Organizations should also deploy intrusion detection systems capable of identifying known exploit signatures and consider network behavior analysis to detect anomalous communications originating from compromised devices. The vulnerability highlights the importance of proper input validation and bounds checking in web application development practices, reinforcing industry standards such as those recommended by the OWASP Top Ten project which emphasizes secure coding principles to prevent similar buffer overflow conditions across network infrastructure devices.