CVE-2018-11013 : Security Advisory and Response

D-Link DIR-816 A2 (CN) routers with firmware version 1.10B05 are vulnerable to a stack-based buffer overflow in the GoAhead software's websRedirect function, allowing remote attackers to execute arbitrary code.

Understanding CVE-2018-11013

This CVE involves a critical vulnerability in D-Link routers that can be exploited remotely without authentication.

What is CVE-2018-11013?

The vulnerability in the GoAhead software on D-Link DIR-816 A2 (CN) routers allows attackers to trigger a stack-based buffer overflow by sending a request with a lengthy HTTP Host header.

The Impact of CVE-2018-11013

Successful exploitation of this vulnerability can lead to the execution of arbitrary code by remote attackers, compromising the security and integrity of the affected routers.

Technical Details of CVE-2018-11013

The technical aspects of this CVE are crucial for understanding the nature of the vulnerability.

Vulnerability Description

The stack-based buffer overflow in the websRedirect function of GoAhead on D-Link DIR-816 A2 (CN) routers with firmware version 1.10B05 allows unauthenticated remote attackers to execute arbitrary code.

Affected Systems and Versions

Product: D-Link DIR-816 A2 (CN) routers
Firmware Version: 1.10B05

Exploitation Mechanism

Attackers exploit this vulnerability by sending a request with an excessively long HTTP Host header, triggering the stack-based buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2018-11013 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable remote access to the router if not required
Implement network segmentation to limit exposure
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update router firmware to patch known vulnerabilities
Conduct security assessments and penetration testing
Educate users on safe browsing habits and security best practices

Patching and Updates

Apply firmware updates provided by D-Link to address the CVE-2018-11013 vulnerability