CVE-2020-9534 : Exploit Details and Defense Strategies
Discover the critical CVE-2020-9534 affecting D-Link DIR-615Jx10 devices. Learn about the stack-based buffer overflow vulnerability and how to mitigate the security risk.
A stack-based buffer overflow vulnerability was discovered in fmwlan.c on D-Link DIR-615Jx10 devices, allowing attackers to exploit the formWlanSetup webpage parameter.
Understanding CVE-2020-9534
This CVE identifies a critical security issue in D-Link DIR-615Jx10 devices that could lead to a stack-based buffer overflow.
What is CVE-2020-9534?
The vulnerability in fmwlan.c on D-Link DIR-615Jx10 devices enables malicious actors to trigger a stack-based buffer overflow by manipulating the formWlanSetup webpage parameter, specifically when f_radius_ip1 is malformed.
The Impact of CVE-2020-9534
Exploitation of this vulnerability could result in unauthorized access, denial of service, or the execution of arbitrary code on affected devices, posing a significant security risk.
Technical Details of CVE-2020-9534
This section delves into the technical aspects of the CVE.
Vulnerability Description
The vulnerability arises from a stack-based buffer overflow in fmwlan.c on D-Link DIR-615Jx10 devices, triggered by malformed input in the formWlanSetup webpage parameter.
Affected Systems and Versions
- Product: D-Link DIR-615Jx10 devices
- Version: Not specified
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially crafted requests to the formWlanSetup webpage, manipulating the f_radius_ip1 parameter to trigger the stack-based buffer overflow.
Mitigation and Prevention
Protecting systems from CVE-2020-9534 requires immediate action and long-term security measures.
Immediate Steps to Take
- Disable remote access to affected devices if not required
- Implement network segmentation to limit exposure
- Monitor network traffic for any suspicious activity
Long-Term Security Practices
- Regularly update firmware and software on devices
- Conduct security assessments and penetration testing
- Educate users on safe browsing habits and security best practices
Patching and Updates
- Apply patches and updates provided by D-Link to address the vulnerability