CVE-2018-17787 : Vulnerability Insights and Analysis
Learn about CVE-2018-17787 affecting D-Link DIR-823G devices. Understand the impact, affected systems, exploitation method, and mitigation steps to prevent unauthorized command execution.
D-Link DIR-823G devices are vulnerable to a /HNAP1 Command Injection flaw in the GoAhead configuration, allowing attackers to execute arbitrary commands.
Understanding CVE-2018-17787
What is CVE-2018-17787?
The vulnerability in D-Link DIR-823G devices enables malicious actors to inject commands using shell metacharacters in POST data, leading to unauthorized command execution.
The Impact of CVE-2018-17787
Exploiting this vulnerability can result in unauthorized access, data theft, and potential system compromise on affected devices.
Technical Details of CVE-2018-17787
Vulnerability Description
The flaw in the GoAhead configuration of D-Link DIR-823G devices allows for /HNAP1 Command Injection by manipulating POST data.
Affected Systems and Versions
- Product: D-Link DIR-823G
- Vendor: D-Link
- Versions: All versions are affected
Exploitation Mechanism
By inserting shell metacharacters in the POST data, attackers can directly send malicious commands to the "system" library function.
Mitigation and Prevention
Immediate Steps to Take
- Disable remote access if not required
- Implement strong firewall rules to restrict unauthorized access
- Regularly monitor network traffic for suspicious activities
Long-Term Security Practices
- Keep devices up to date with the latest firmware
- Conduct regular security audits and penetration testing
Patching and Updates
Ensure timely installation of security patches provided by D-Link to address the /HNAP1 Command Injection vulnerability.