CVE-2019-7719 : Exploit Details and Defense Strategies

Nibbleblog version 4.0.5 is vulnerable to eval injection when the username parameter in the install.php file is manipulated to include PHP code, allowing exploitation by sending a request to content/private/shadow.php.

Understanding CVE-2019-7719

This CVE involves a security vulnerability in Nibbleblog version 4.0.5 that enables eval injection through the manipulation of the username parameter.

What is CVE-2019-7719?

The vulnerability in Nibbleblog version 4.0.5 allows attackers to inject PHP code into the username parameter in the install.php file, leading to potential exploitation by sending a request to content/private/shadow.php.

The Impact of CVE-2019-7719

This vulnerability can be exploited by malicious actors to execute arbitrary PHP code on the affected system, potentially leading to unauthorized access, data theft, or further compromise of the system.

Technical Details of CVE-2019-7719

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in Nibbleblog version 4.0.5 enables eval injection by inserting PHP code into the username parameter of the install.php file and subsequently sending a request to content/private/shadow.php.

Affected Systems and Versions

Affected Version: 4.0.5
Systems running Nibbleblog version 4.0.5 are vulnerable to this exploit.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the username parameter in the install.php file to include malicious PHP code and then sending a crafted request to content/private/shadow.php to trigger the eval injection.

Mitigation and Prevention

Protecting systems from CVE-2019-7719 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable the affected application or restrict access to prevent exploitation.
Implement input validation to sanitize user inputs and prevent malicious code injection.

Long-Term Security Practices

Regularly update the application to the latest secure version.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply patches or security updates provided by the software vendor to fix the vulnerability and enhance system security.