CVE-2019-14349 : Exploit Details and Defense Strategies

EspoCRM version 5.6.4 is susceptible to a stored XSS vulnerability in the api/v1/Document feature, allowing attackers to execute malicious JavaScript code.

Understanding CVE-2019-14349

This CVE involves a security issue in EspoCRM version 5.6.4 that enables stored XSS attacks through crafted file uploads.

What is CVE-2019-14349?

The vulnerability in the api/v1/Document functionality of EspoCRM version 5.6.4 permits the execution of malicious JavaScript code embedded in uploaded files.

The Impact of CVE-2019-14349

The lack of proper data filtration in EspoCRM version 5.6.4 can lead to stored XSS attacks, enabling threat actors to compromise user accounts and execute unauthorized code.

Technical Details of CVE-2019-14349

EspoCRM version 5.6.4's vulnerability to stored XSS due to inadequate data filtration in the api/v1/Document feature poses significant security risks.

Vulnerability Description

The flaw allows attackers to upload files with JavaScript code in their names, which gets executed when users access associated profiles, leading to potential data theft or manipulation.

Affected Systems and Versions

System: EspoCRM version 5.6.4
Versions: All instances running version 5.6.4

Exploitation Mechanism

Attackers upload files with malicious JavaScript code embedded in the file names.
When users view profiles containing these files, the injected code executes, compromising user sessions and potentially the entire system.

Mitigation and Prevention

Taking immediate action and implementing long-term security measures are crucial to mitigating the risks associated with CVE-2019-14349.

Immediate Steps to Take

Upgrade to a patched version of EspoCRM that addresses the XSS vulnerability.
Avoid opening files from untrusted sources to prevent potential attacks.

Long-Term Security Practices

Regularly update and patch software to protect against known vulnerabilities.
Educate users on safe file handling practices and the risks of opening files from unknown sources.

Patching and Updates

Apply security patches provided by EspoCRM promptly to fix the XSS vulnerability and enhance system security.