CVE-2018-18739 : Exploit Details and Defense Strategies

A cross-site scripting (XSS) vulnerability was identified in SEMCMS version 3.4 through the admin/SEMCMS_Products.php?lgid=1 Keywords field.

Understanding CVE-2018-18739

An XSS issue was discovered in SEMCMS 3.4 via the admin/SEMCMS_Products.php?lgid=1 Keywords field.

What is CVE-2018-18739?

This CVE refers to a cross-site scripting vulnerability found in SEMCMS version 3.4 through a specific input field.

The Impact of CVE-2018-18739

The vulnerability could allow an attacker to execute malicious scripts in the context of a user's browser, potentially leading to various attacks such as session hijacking, defacement, or data theft.

Technical Details of CVE-2018-18739

The technical details of the vulnerability are as follows:

Vulnerability Description

Type: Cross-Site Scripting (XSS)
Affected Version: SEMCMS 3.4
Vulnerable Component: admin/SEMCMS_Products.php?lgid=1 Keywords field

Affected Systems and Versions

Affected Product: SEMCMS
Affected Version: 3.4

Exploitation Mechanism

The vulnerability can be exploited by injecting malicious scripts into the Keywords field, which could then be executed when a user interacts with the affected page.

Mitigation and Prevention

To address CVE-2018-18739, consider the following mitigation strategies:

Immediate Steps to Take

Disable or sanitize user input in the Keywords field to prevent script injection.
Implement Content Security Policy (CSP) headers to mitigate XSS risks.

Long-Term Security Practices

Conduct regular security assessments and code reviews to identify and address vulnerabilities.
Educate developers on secure coding practices to prevent similar issues in the future.

Patching and Updates

Apply patches or updates provided by the SEMCMS vendor to fix the XSS vulnerability.