CVE-2018-1000658 : Security Advisory and Response

LimeSurvey version before 3.14.4 has a security flaw in its file upload feature, potentially allowing an attacker to execute malicious code through a webshell. This vulnerability has been addressed in version 3.14.4.

Understanding CVE-2018-1000658

This CVE involves a file upload vulnerability in LimeSurvey that could lead to code execution by an attacker.

What is CVE-2018-1000658?

The security flaw in LimeSurvey version prior to 3.14.4 allows an authenticated user to upload a zip archive containing harmful PHP files, enabling the execution of malicious code through a webshell.

The Impact of CVE-2018-1000658

The vulnerability poses a risk of unauthorized code execution on affected systems, potentially leading to data breaches, system compromise, and unauthorized access.

Technical Details of CVE-2018-1000658

LimeSurvey's file upload vulnerability and its implications.

Vulnerability Description

The flaw in LimeSurvey's file upload functionality enables attackers to upload malicious PHP files within a zip archive, leading to code execution through a webshell.

Affected Systems and Versions

LimeSurvey versions before 3.14.4

Exploitation Mechanism

An authenticated user uploads a zip archive containing harmful PHP files
The malicious code can be invoked under specific conditions

Mitigation and Prevention

Steps to address and prevent the CVE-2018-1000658 vulnerability.

Immediate Steps to Take

Update LimeSurvey to version 3.14.4 or later to mitigate the vulnerability
Avoid uploading zip archives from untrusted sources

Long-Term Security Practices

Regularly update software and apply security patches
Implement file upload restrictions and security controls

Patching and Updates

Ensure timely installation of software updates and security patches to prevent exploitation of known vulnerabilities