CVE-2019-19702 : Vulnerability Insights and Analysis

Modoboa-dmarc plugin 1.1.0 for Modoboa is susceptible to an XML External Entity Injection (XXE) vulnerability, enabling remote attackers to disrupt DMARC reporting functionality.

Understanding CVE-2019-19702

This CVE involves a security issue in the modoboa-dmarc plugin 1.1.0 for Modoboa, allowing for an XXE attack during XML data processing.

What is CVE-2019-19702?

The vulnerability permits attackers to execute an XXE attack by referencing the /dev/random file in XML documents, impacting DMARC reporting functionality.

The Impact of CVE-2019-19702

Enables remote attackers to disrupt DMARC reporting functionality
Exploitable by including a reference to the /dev/random file in XML documents

Technical Details of CVE-2019-19702

The technical aspects of this CVE include:

Vulnerability Description

The modoboa-dmarc plugin 1.1.0 for Modoboa is vulnerable to an XXE attack during XML data processing.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: 1.1.0

Exploitation Mechanism

Attackers can exploit this vulnerability by referencing the /dev/random file in XML documents sent to the specified email address in the rua field of a domain's DMARC records.

Mitigation and Prevention

To address CVE-2019-19702, consider the following:

Immediate Steps to Take

Disable the modoboa-dmarc plugin until a patch is available
Monitor for any unusual DMARC reporting activities

Long-Term Security Practices

Regularly update and patch software components
Implement XML data processing best practices

Patching and Updates

Stay informed about security updates for the modoboa-dmarc plugin
Apply patches promptly to mitigate the XXE vulnerability