CVE-2020-26567 : Vulnerability Insights and Analysis
Discover the impact of CVE-2020-26567 on D-Link DSR-250N devices. Learn about the vulnerability allowing unauthorized access to reboot the device, causing temporary unavailability.
An issue was discovered on D-Link DSR-250N before 3.17B devices where the CGI script upgradeStatusReboot.cgi can be accessed without authentication, leading to a denial of service vulnerability.
Understanding CVE-2020-26567
This CVE identifies a security flaw in D-Link DSR-250N devices that allows unauthorized access to a critical CGI script, resulting in a device reboot and temporary unavailability.
What is CVE-2020-26567?
The vulnerability in D-Link DSR-250N devices allows unauthenticated users to trigger a device reboot by accessing a specific CGI script, causing a denial of service condition.
The Impact of CVE-2020-26567
Exploitation of this vulnerability can render the affected D-Link DSR-250N device unusable for several minutes, disrupting network operations and potentially causing downtime.
Technical Details of CVE-2020-26567
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The issue arises from the ability to access the upgradeStatusReboot.cgi script without authentication, enabling unauthorized users to trigger device reboots.
Affected Systems and Versions
- Affected Device: D-Link DSR-250N
- Affected Versions: Before 3.17B
Exploitation Mechanism
Unauthorized users can exploit the vulnerability by accessing the upgradeStatusReboot.cgi script without the need for authentication, leading to a device reboot.
Mitigation and Prevention
Protecting systems from CVE-2020-26567 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Restrict access to the upgradeStatusReboot.cgi script to authorized users only.
- Monitor network traffic for any unauthorized attempts to access critical scripts.
Long-Term Security Practices
- Regularly update firmware to patch known vulnerabilities.
- Implement strong authentication mechanisms to prevent unauthorized access to critical functions.
Patching and Updates
- Apply the latest firmware updates provided by D-Link to address the CVE-2020-26567 vulnerability.