CVE-2019-10254 : Exploit Details and Defense Strategies

MISP before version 2.4.105 is vulnerable to Reflected XSS due to a flaw in the default layout template.

Understanding CVE-2019-10254

This CVE identifies a security vulnerability in MISP that could allow for Reflected XSS attacks.

What is CVE-2019-10254?

MISP's default layout template, default.ctp, in the app/View/Layouts directory, contains a security flaw that enables Reflected XSS, potentially leading to malicious script execution.

The Impact of CVE-2019-10254

The vulnerability could be exploited by attackers to execute arbitrary scripts in the context of a user's session, potentially compromising sensitive data or performing unauthorized actions.

Technical Details of CVE-2019-10254

MISP before version 2.4.105 is affected by this vulnerability.

Vulnerability Description

The default layout template, default.ctp, in MISP's app/View/Layouts directory is susceptible to Reflected XSS attacks.

Affected Systems and Versions

Product: MISP
Vendor: N/A
Versions: All versions before 2.4.105

Exploitation Mechanism

Attackers can craft malicious URLs containing scripts that, when clicked by a user, get executed within the user's session, potentially leading to unauthorized actions.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risk posed by CVE-2019-10254.

Immediate Steps to Take

Update MISP to version 2.4.105 or later to patch the vulnerability.
Implement input validation and output encoding to prevent XSS attacks.
Regularly monitor and audit web application logs for suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Educate users and developers on secure coding practices to prevent XSS and other common web application security issues.

Patching and Updates

Stay informed about security updates and patches released by MISP.
Apply patches promptly to ensure that known vulnerabilities are addressed and mitigated.