CVE-2019-9976 Explained : Impact and Mitigation

This CVE-2019-9976 article provides insights into a security vulnerability found in the firmware 1.03-0022 of DASAN H660RM devices, impacting the Boa server configuration.

Understanding CVE-2019-9976

The vulnerability allows logged-in users to access and view the login details of administration web interface users due to the logging of POST data to the /tmp/boa-temp file.

What is CVE-2019-9976?

The Boa server configuration on DASAN H660RM devices with firmware 1.03-0022 logs POST data to the /tmp/boa-temp file, exposing sensitive credentials.

The Impact of CVE-2019-9976

The vulnerability enables unauthorized access to login details, posing a significant security risk to the affected devices.

Technical Details of CVE-2019-9976

The following technical aspects are crucial to understanding this CVE.

Vulnerability Description

The firmware 1.03-0022 of DASAN H660RM devices logs POST data to /tmp/boa-temp, allowing unauthorized users to view sensitive login information.

Affected Systems and Versions

Affected Systems: DASAN H660RM devices with firmware 1.03-0022
Affected Versions: 1.03-0022

Exploitation Mechanism

The vulnerability is exploited by logged-in users to access and retrieve the login credentials of administration web interface users.

Mitigation and Prevention

Protecting systems from CVE-2019-9976 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable access to the /tmp/boa-temp file for unauthorized users.
Monitor and restrict access to sensitive system files.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Implement strong password policies and multi-factor authentication.

Patching and Updates

Ensure that the firmware of DASAN H660RM devices is updated to a secure version that addresses the logging vulnerability.