CVE-2019-18347 : Vulnerability Insights and Analysis

A stored XSS vulnerability has been identified in DAViCal versions 1.1.8 and below, allowing the execution of malicious JavaScript code by privileged users. This CVE-2019-18347 affects fields like Username, Display Name, and Email.

Understanding CVE-2019-18347

This CVE pertains to a stored XSS vulnerability in DAViCal versions 1.1.8 and earlier.

What is CVE-2019-18347?

This CVE refers to a flaw in DAViCal that enables the execution of stored XSS attacks by inadequately sanitizing user-modifiable fields.

The Impact of CVE-2019-18347

The vulnerability allows users with limited privileges to store malicious JavaScript code in specific fields, potentially leading to unauthorized code execution by users with higher privileges.

Technical Details of CVE-2019-18347

This section provides technical insights into the vulnerability.

Vulnerability Description

DAViCal versions 1.1.8 and below lack proper sanitization of user-modifiable fields, enabling the storage and execution of JavaScript code by unauthorized users.

Affected Systems and Versions

DAViCal versions 1.1.8 and earlier

Exploitation Mechanism

Users with limited privileges can input JavaScript code in fields like Username, Display Name, and Email, which can be executed by other users, potentially with higher privileges.

Mitigation and Prevention

Protect your systems from CVE-2019-18347 with these measures:

Immediate Steps to Take

Update DAViCal to the latest version that includes a patch for this vulnerability.
Restrict access to user-modifiable fields to prevent unauthorized input.

Long-Term Security Practices

Regularly audit and sanitize user inputs to prevent XSS vulnerabilities.
Educate users on secure coding practices to minimize the risk of storing malicious code.

Patching and Updates

Stay informed about security updates and promptly apply patches to mitigate known vulnerabilities.