CVE-2018-18743 : Security Advisory and Response

A cross-site scripting (XSS) vulnerability was discovered in SEMCMS 3.4, specifically when utilizing the second text field on the admin/SEMCMS_Categories.php?pid=1&lgid=1 URL.

Understanding CVE-2018-18743

This CVE entry pertains to a security issue in SEMCMS 3.4 that allows for XSS attacks through a specific input field.

What is CVE-2018-18743?

CVE-2018-18743 is an XSS vulnerability found in SEMCMS 3.4, triggered by using the second text field on a particular URL within the admin interface.

The Impact of CVE-2018-18743

This vulnerability could allow an attacker to execute malicious scripts in the context of an unsuspecting user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2018-18743

This section delves into the specifics of the vulnerability.

Vulnerability Description

The XSS flaw in SEMCMS 3.4 enables threat actors to inject and execute malicious scripts via the second text field on the admin/SEMCMS_Categories.php?pid=1&lgid=1 URL.

Affected Systems and Versions

Affected Product: SEMCMS 3.4
Affected Version: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by inserting crafted scripts into the vulnerable text field, which, when executed, can compromise user sessions.

Mitigation and Prevention

To address and prevent exploitation of CVE-2018-18743, follow these guidelines:

Immediate Steps to Take

Disable or restrict access to the vulnerable URL or input field.
Implement input validation to sanitize user-supplied data.
Regularly monitor and audit for suspicious activities.

Long-Term Security Practices

Conduct security training for developers to enhance awareness of secure coding practices.
Employ web application firewalls to filter and block malicious traffic.

Patching and Updates

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