CVE-2021-39434 : Exploit Details and Defense Strategies

This CVE record discusses a security issue in ZKTeco ZKTime software versions 10.0 through 11.1.0.

Understanding CVE-2021-39434

This CVE entails the discovery of a default username and password for an administrator account in ZKTeco ZKTime software.

What is CVE-2021-39434?

The CVE-2021-39434 vulnerability involves the presence of a default administrator username and password in specific builds of ZKTeco ZKTime software versions 10.0 to 11.1.0.

The Impact of CVE-2021-39434

The presence of a default username and password in ZKTeco ZKTime software can lead to unauthorized access and potential security breaches.

Technical Details of CVE-2021-39434

This section provides technical insights into the vulnerability.

Vulnerability Description

The issue lies in the discovery of default credentials for an administrator account within the affected ZKTeco ZKTime software versions.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: 10.0 - 11.1.0 (builds 20180901, 20190510.1, 20200309.3, 20200930, 20201231, 20210220)

Exploitation Mechanism

Attackers can exploit this vulnerability by using the default username and password to gain unauthorized access to ZKTeco ZKTime software.

Mitigation and Prevention

Here are the steps to mitigate and prevent the CVE-2021-39434 vulnerability.

Immediate Steps to Take

Change the default administrator username and password immediately.
Limit access to the ZKTeco ZKTime software to trusted users.

Long-Term Security Practices

Implement strong password policies for all accounts.
Regularly update the software to patch security vulnerabilities.

Patching and Updates

It is crucial to update the ZKTeco ZKTime software to versions that have addressed the default credentials issue.