CVE-2019-19900 : What You Need to Know

A vulnerability was found in Backdrop CMS versions 1.13.x prior to 1.13.5 and 1.14.x prior to 1.14.2, allowing for a potential cross-site scripting (XSS) attack.

Understanding CVE-2019-19900

This CVE identifies a security issue in Backdrop CMS versions 1.13.x and 1.14.x that could be exploited for XSS attacks.

What is CVE-2019-19900?

The vulnerability arises from inadequate filtering of output in the content creation interface, specifically related to displaying content type names. This flaw could enable an attacker to execute malicious scripts by creating a specially crafted content type name.

The Impact of CVE-2019-19900

The vulnerability could lead to a cross-site scripting (XSS) attack, potentially compromising the security and integrity of the affected Backdrop CMS instances.

Technical Details of CVE-2019-19900

This section delves into the technical aspects of the CVE.

Vulnerability Description

The issue in Backdrop CMS versions 1.13.x and 1.14.x allows attackers to execute scripts by manipulating content type names due to insufficient output filtering.

Affected Systems and Versions

Backdrop CMS versions 1.13.x before 1.13.5
Backdrop CMS versions 1.14.x before 1.14.2

Exploitation Mechanism

Attackers with the "Administer content types" permission can exploit this vulnerability by creating malicious content type names.

Mitigation and Prevention

Protect your systems from CVE-2019-19900 with these strategies.

Immediate Steps to Take

Limit the "Administer content types" permission to trusted individuals only.

Long-Term Security Practices

Regularly review and update permissions to minimize the risk of unauthorized access.
Educate content editors on safe content creation practices to prevent XSS attacks.

Patching and Updates

Update affected Backdrop CMS instances to versions 1.13.5 and 1.14.2 to patch the vulnerability.