CVE-2018-1000659 : Exploit Details and Defense Strategies

LimeSurvey version 3.14.4 and earlier contain a directory traversal vulnerability in the file upload feature, allowing authenticated users to upload a malicious zip file, potentially leading to remote code execution. The issue has been fixed in versions released after commit 72a02ebaaf95a80e26127ee7ee2b123cccce05a7.

Understanding CVE-2018-1000659

This CVE involves a security vulnerability in LimeSurvey versions 3.14.4 and below that could be exploited for remote code execution.

What is CVE-2018-1000659?

The vulnerability in LimeSurvey versions 3.14.4 and earlier allows authenticated users to perform a directory traversal via the file upload feature, enabling the upload of a malicious zip file. This could potentially result in remote code execution.

The Impact of CVE-2018-1000659

The exploitation of this vulnerability could lead to unauthorized remote code execution on affected systems, posing a significant security risk.

Technical Details of CVE-2018-1000659

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability in LimeSurvey versions 3.14.4 and below allows for a directory traversal in the file upload functionality, enabling the upload of a malicious zip file, potentially resulting in remote code execution.

Affected Systems and Versions

LimeSurvey versions 3.14.4 and earlier are affected by this vulnerability.

Exploitation Mechanism

Authenticated users can exploit this vulnerability by uploading a specially crafted zip file, which could lead to remote code execution.

Mitigation and Prevention

Protecting systems from CVE-2018-1000659 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update LimeSurvey to a version released after commit 72a02ebaaf95a80e26127ee7ee2b123cccce05a7.
Monitor and restrict file upload permissions.

Long-Term Security Practices

Regularly review and update security configurations.
Conduct security training for users on safe file handling practices.

Patching and Updates

Apply patches and updates provided by LimeSurvey to ensure the latest security fixes are in place.