CVE-2018-17984 : Exploit Details and Defense Strategies

This CVE-2018-17984 article provides insights into a vulnerability in ISPConfig that could lead to code execution by exploiting an unanchored regular expression.

Understanding CVE-2018-17984

What is CVE-2018-17984?

An unanchored regular expression in ISPConfig before version 3.1.13 allows the inclusion of arbitrary files, potentially resulting in code execution. Authenticated users with local filesystem access can exploit this vulnerability.

The Impact of CVE-2018-17984

This vulnerability poses a significant risk as it enables attackers to execute arbitrary code on affected systems, compromising their integrity and security.

Technical Details of CVE-2018-17984

Vulnerability Description

The unanchored regular expression in ISPConfig prior to version 3.1.13 permits the inclusion of random files, leading to code execution when exploited by authenticated users with local filesystem access.

Affected Systems and Versions

Product: ISPConfig
Vendor: N/A
Versions affected: All versions before 3.1.13

Exploitation Mechanism

The vulnerability can be exploited by authenticated users who have local filesystem access, allowing them to include random files and execute malicious code.

Mitigation and Prevention

Immediate Steps to Take

Update ISPConfig to version 3.1.13 or later to mitigate the vulnerability.
Monitor and restrict user permissions to prevent unauthorized access to the filesystem.

Long-Term Security Practices

Regularly audit and review code for vulnerabilities like unanchored regular expressions.
Educate users on secure coding practices and the risks associated with arbitrary file inclusion.

Patching and Updates

Apply security patches and updates promptly to address known vulnerabilities and enhance system security.