CVE-2019-7725 : What You Need to Know

NukeViet before version 4.3.04 is susceptible to deserialization attacks due to mishandling the nvloginhash cookie, potentially leading to security vulnerabilities.

Understanding CVE-2019-7725

The vulnerability in NukeViet versions prior to 4.3.04 arises from incorrect usage of PHP serialization format instead of JSON, enabling exploitation for malicious purposes.

What is CVE-2019-7725?

The is_user.php file in NukeViet versions earlier than 4.3.04 is vulnerable to deserialization attacks when processing the nvloginhash cookie. This means that the code incorrectly uses PHP's serialization format instead of JSON, which could be exploited to mitigate security risks.

The Impact of CVE-2019-7725

The vulnerability allows threat actors to manipulate the nvloginhash cookie, potentially leading to security breaches and unauthorized access to sensitive information.

Technical Details of CVE-2019-7725

NukeViet's vulnerability CVE-2019-7725 can be further understood through the following technical aspects:

Vulnerability Description

The vulnerability lies in the is_user.php file of NukeViet versions prior to 4.3.04, where the nvloginhash cookie is deserialized, creating an avenue for exploitation.

Affected Systems and Versions

Affected Version: NukeViet versions earlier than 4.3.04
Systems: NukeViet installations that have not been updated to version 4.3.04

Exploitation Mechanism

The vulnerability can be exploited by manipulating the nvloginhash cookie, taking advantage of the incorrect serialization format used in the code.

Mitigation and Prevention

Protecting systems from CVE-2019-7725 requires immediate actions and long-term security practices:

Immediate Steps to Take

Update NukeViet installations to version 4.3.04 or later to mitigate the vulnerability.
Monitor and restrict access to sensitive cookies and data within the application.

Long-Term Security Practices

Regularly audit and review code for proper handling of serialization and deserialization processes.
Educate developers on secure coding practices to prevent similar vulnerabilities in the future.

Patching and Updates

Apply patches and updates provided by NukeViet to address the vulnerability and enhance system security.