CVE-2018-10996 Explained : Impact and Mitigation

CVE-2018-10996 was published on May 12, 2018, and affects D-Link DIR-629-B1 devices. Attackers can exploit a vulnerability in the weblogin_log function to execute unauthorized code or disrupt services through a buffer overflow.

Understanding CVE-2018-10996

This CVE entry highlights a critical security issue in D-Link DIR-629-B1 devices that can be exploited by attackers.

What is CVE-2018-10996?

The vulnerability allows attackers to execute arbitrary code or cause a denial of service by sending a specific request involving a long REMOTE_ADDR environment variable.

The Impact of CVE-2018-10996

Exploitation of this vulnerability can lead to unauthorized code execution or service disruption on affected devices.

Technical Details of CVE-2018-10996

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The weblogin_log function in /htdocs/cgibin on D-Link DIR-629-B1 devices is susceptible to a buffer overflow, enabling attackers to trigger unauthorized code execution or service disruption.

Affected Systems and Versions

Product: D-Link DIR-629-B1
Version: Not applicable

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a session.cgi?ACTION=logout request with an excessively long REMOTE_ADDR environment variable.

Mitigation and Prevention

Protecting systems from CVE-2018-10996 requires immediate action and long-term security measures.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all software and firmware on devices.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Ensure that all D-Link DIR-629-B1 devices are updated with the latest firmware and security patches to mitigate the risk of exploitation.