CVE-2018-17797 : Vulnerability Insights and Analysis

A vulnerability has been found in zzcms 8.3 that allows attackers to delete arbitrary files on the system, potentially leading to unauthorized database access.

Understanding CVE-2018-17797

This CVE entry describes a security issue in zzcms 8.3 that enables remote attackers to delete files on the system.

What is CVE-2018-17797?

This vulnerability in zzcms 8.3 allows attackers to delete files on the system by exploiting the "user/zssave.php" file using directory traversal sequences in an "action=modify" request.

The Impact of CVE-2018-17797

By leveraging this vulnerability, attackers can delete files on the system, potentially leading to unauthorized access to the database by deleting critical files like the "install.lock" file.

Technical Details of CVE-2018-17797

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in zzcms 8.3 resides in the "user/zssave.php" file, allowing remote attackers to delete arbitrary files through directory traversal sequences in the "oldimg" parameter of an "action=modify" request.

Affected Systems and Versions

Product: zzcms 8.3
Vendor: Not applicable
Versions: Not applicable

Exploitation Mechanism

Attackers exploit the vulnerability by using directory traversal sequences in the "oldimg" parameter of an "action=modify" request to delete files on the system.

Mitigation and Prevention

To address CVE-2018-17797, follow these mitigation strategies:

Immediate Steps to Take

Apply security patches provided by the vendor.
Restrict access to the vulnerable file "user/zssave.php".
Monitor file deletion activities on the system.

Long-Term Security Practices

Regularly update and patch software to prevent vulnerabilities.
Implement access controls to limit unauthorized file deletions.

Patching and Updates

Stay informed about security updates for zzcms 8.3.
Apply patches promptly to mitigate the risk of file deletion attacks.