CVE-2019-13358 : Security Advisory and Response

OpenCats version 0.9.4-3 and earlier has a vulnerability in the lib/DocumentToText.php file that allows remote individuals to access and read files on the host operating system by uploading a file in docx or odt format.

Understanding CVE-2019-13358

This CVE identifies a vulnerability in OpenCats versions prior to 0.9.4-3 that enables unauthorized access to files on the underlying operating system.

What is CVE-2019-13358?

CVE-2019-13358 is an XML External Entity (XXE) vulnerability in OpenCats, which permits remote users to read files on the host system by exploiting the lib/DocumentToText.php file.

The Impact of CVE-2019-13358

The vulnerability allows attackers to access and retrieve sensitive files from the host operating system, potentially leading to unauthorized disclosure of confidential information.

Technical Details of CVE-2019-13358

OpenCats version 0.9.4-3 and earlier are affected by this vulnerability.

Vulnerability Description

The XXE vulnerability in lib/DocumentToText.php of OpenCats before 0.9.4-3 enables remote users to read files on the underlying operating system by uploading a file in docx or odt format.

Affected Systems and Versions

OpenCats versions 0.9.4-3 and earlier

Exploitation Mechanism

To exploit this vulnerability, an attacker needs to upload a file in either docx or odt format to gain unauthorized access to files on the host system.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2019-13358.

Immediate Steps to Take

Update OpenCats to version 0.9.4-3 or later to patch the vulnerability
Regularly monitor for any unauthorized access or file manipulation

Long-Term Security Practices

Implement access controls to restrict file access based on user permissions
Conduct regular security audits and vulnerability assessments to identify and address potential risks

Patching and Updates

Apply patches and updates provided by OpenCats to ensure the security of the system