CVE-2019-19381 Explained : Impact and Mitigation

Abacus OAuth Login 2019_01_r4_20191021_0000 version before the R4 (20.11.2019 Hotfix) is vulnerable to Reflected Cross Site Scripting (XSS) via the oauth/oauth2/v1/saml/ endpoint.

Understanding CVE-2019-19381

This CVE involves a security vulnerability in the Abacus OAuth Login 2019_01_r4_20191021_0000 version that allows for Reflected Cross Site Scripting (XSS) attacks.

What is CVE-2019-19381?

The CVE-2019-19381 vulnerability occurs in the Abacus OAuth Login 2019_01_r4_20191021_0000 version before the R4 (20.11.2019 Hotfix), enabling attackers to execute XSS attacks through the oauth/oauth2/v1/saml/ endpoint.

The Impact of CVE-2019-19381

This vulnerability could allow malicious actors to inject and execute malicious scripts in the context of a user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-19381

The technical aspects of the CVE-2019-19381 vulnerability are as follows:

Vulnerability Description

An error message in the Abacus OAuth Login 2019_01_r4_20191021_0000 version before the R4 (20.11.2019 Hotfix) allows Reflected Cross Site Scripting (XSS) via the oauth/oauth2/v1/saml/ endpoint.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Abacus OAuth Login 2019_01_r4_20191021_0000 version before the R4 (20.11.2019 Hotfix)

Exploitation Mechanism

The vulnerability can be exploited by sending a crafted request to the oauth/oauth2/v1/saml/ endpoint, leading to the execution of malicious scripts in the user's browser.

Mitigation and Prevention

To address CVE-2019-19381, the following steps are recommended:

Immediate Steps to Take

Apply the necessary security patches provided by the vendor.
Monitor and restrict user input to prevent XSS attacks.
Educate users about the risks of clicking on suspicious links or visiting untrusted websites.

Long-Term Security Practices

Implement secure coding practices to sanitize user input and prevent XSS vulnerabilities.
Regularly update and patch software to address known security issues.

Patching and Updates

Ensure that the Abacus OAuth Login software is updated to the latest version that includes the R4 (20.11.2019 Hotfix) to mitigate the XSS vulnerability.