CVE-2021-39613 : Security Advisory and Response

This CVE-2021-39613 article provides insights into a cybersecurity vulnerability affecting D-Link DVG-3104MS devices.

Understanding CVE-2021-39613

This section delves into the specifics of the vulnerability and its impact.

What is CVE-2021-39613?

CVE-2021-39613 involves hard-coded credentials present for undocumented user accounts in specific versions of D-Link DVG-3104MS. These credentials can be easily retrieved due to the use of weak passwords.

The Impact of CVE-2021-39613

The vulnerability poses a severe risk as attackers can exploit the hard-coded credentials to gain unauthorized access to affected devices. This can lead to significant confidentiality, integrity, and availability issues.

Technical Details of CVE-2021-39613

Explore the technical aspects of CVE-2021-39613 and the systems it affects.

Vulnerability Description

The D-Link DVG-3104MS versions 1.0.2.0.3, 1.0.2.0.4, and 1.0.2.0.4E contain hard-coded credentials within the '/etc/passwd' file, allowing password retrieval from hash values.

Affected Systems and Versions

Product: D-Link DVG-3104MS
Versions: 1.0.2.0.3, 1.0.2.0.4, 1.0.2.0.4E

Exploitation Mechanism

The weak passwords stored in plaintext enable threat actors to extract the actual passwords from hash values, compromising device security.

Mitigation and Prevention

Learn the steps to mitigate the vulnerability and enhance the security of D-Link DVG-3104MS devices.

Immediate Steps to Take

Change default credentials promptly.
Disable any undocumented accounts.

Long-Term Security Practices

Implement strong password policies.
Regularly update firmware to prevent similar vulnerabilities.

Patching and Updates

Ensure firmware updates are regularly checked and applied to eliminate the hard-coded credentials vulnerability.