CVE-2019-14669 : Exploit Details and Defense Strategies

Firefly III 4.7.17.3 is vulnerable to a stored XSS (Cross-Site Scripting) attack due to inadequate filtration of user-supplied data in the asset account name. This allows malicious JavaScript code execution when accessing the audit account statistics page.

Understanding CVE-2019-14669

This CVE identifies a specific security vulnerability in Firefly III version 4.7.17.3.

What is CVE-2019-14669?

The vulnerability in Firefly III 4.7.17.3 allows attackers to inject malicious JavaScript code through the asset account name, leading to stored XSS attacks.

The Impact of CVE-2019-14669

The vulnerability enables attackers to execute arbitrary JavaScript code within the context of the user's session, potentially compromising sensitive data or performing unauthorized actions.

Technical Details of CVE-2019-14669

Firefly III 4.7.17.3's vulnerability to stored XSS.

Vulnerability Description

The issue arises from the lack of proper input validation in the asset account name field, allowing attackers to insert and execute malicious scripts.

Affected Systems and Versions

Firefly III version 4.7.17.3

Exploitation Mechanism

Attackers input malicious JavaScript code into the asset account name field.
When users access the audit account statistics page, the injected code executes within the application.

Mitigation and Prevention

Protecting systems from CVE-2019-14669.

Immediate Steps to Take

Update Firefly III to a patched version that includes proper input validation.
Avoid inputting untrusted data into fields that may execute code.

Long-Term Security Practices

Implement strict input validation and output encoding in web applications.
Regularly monitor and audit code for vulnerabilities like XSS.

Patching and Updates

Apply security patches provided by Firefly III promptly to mitigate the vulnerability.