CVE-2024-9569 in DIR-619L B1
Summary
by MITRE • 10/07/2024
A vulnerability has been found in D-Link DIR-619L B1 2.06 and classified as critical. Affected by this vulnerability is the function formEasySetPassword of the file /goform/formEasySetPassword. The manipulation of the argument curTime leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 10/10/2024
The vulnerability identified as CVE-2024-9569 represents a critical buffer overflow flaw within the D-Link DIR-619L B1 2.06 router firmware. This issue resides in the formEasySetPassword function located within the /goform/formEasySetPassword file, which serves as a web interface endpoint for managing router password settings. The vulnerability specifically manifests when the curTime parameter is manipulated, creating conditions that allow attackers to exceed allocated memory boundaries and potentially execute arbitrary code on the affected device. The remote exploitation capability of this vulnerability presents a significant risk as it does not require physical access to the device, making it particularly dangerous in networked environments where routers serve as primary network gateways.
The technical nature of this vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations. The flaw demonstrates characteristics of a classic buffer overflow exploit where the curTime argument serves as the attack vector, likely through improper input validation or handling of user-supplied data. When an attacker sends a specially crafted request containing an oversized curTime parameter, the router's web server processes this input without adequate boundary checks, leading to memory corruption that can be leveraged to execute malicious code or cause system instability. This type of vulnerability falls under the ATT&CK technique T1210 - Exploitation of Remote Services, specifically targeting web application interfaces that manage device configuration parameters.
The operational impact of this vulnerability extends beyond simple system compromise, as it enables attackers to gain unauthorized administrative access to the router's management interface. Successful exploitation could allow threat actors to modify network configurations, redirect traffic through malicious proxies, implement man-in-the-middle attacks, or establish persistent backdoors within the network infrastructure. Given that routers often serve as the primary gateway for network traffic and may control access to critical internal systems, this vulnerability poses a severe risk to enterprise and home network security. The public disclosure of the exploit increases the likelihood of widespread abuse, as security researchers and malicious actors alike can leverage this knowledge to target vulnerable installations across various network environments.
Mitigation strategies for CVE-2024-9569 should prioritize immediate firmware updates from D-Link, as the vendor is expected to release patches addressing the buffer overflow condition in the affected formEasySetPassword function. Network administrators should implement additional protective measures including disabling unnecessary remote management services, restricting access to the router's web interface through firewall rules, and monitoring network traffic for suspicious activity patterns that may indicate exploitation attempts. The implementation of network segmentation and intrusion detection systems can help identify potential exploitation attempts before they result in successful compromise. Organizations should also consider performing vulnerability scans to identify other potentially affected devices within their network infrastructure and establish incident response procedures to address potential exploitation of this vulnerability. Security teams must remain vigilant about the evolving threat landscape and maintain awareness of related vulnerabilities that may affect similar router models or firmware versions.