CVE-2019-12248 : Security Advisory and Response

A vulnerability in Open Ticket Request System (OTRS) versions allows attackers to exploit the system through malicious emails.

Understanding CVE-2019-12248

This CVE identifies a security flaw in OTRS that could lead to the loading of external image resources by the browser.

What is CVE-2019-12248?

The vulnerability in OTRS versions 5.0.x through 5.0.36, 6.0.x through 6.0.19, and 7.0.x through 7.0.7 enables attackers to manipulate the system by sending specially crafted emails.

The Impact of CVE-2019-12248

Exploiting this vulnerability could result in the execution of malicious code or unauthorized access to sensitive information within the OTRS system.

Technical Details of CVE-2019-12248

This section delves into the specifics of the vulnerability.

Vulnerability Description

The flaw allows attackers to trigger the loading of external image resources by manipulating email content within the OTRS system.

Affected Systems and Versions

OTRS versions 5.0.x through 5.0.36
OTRS versions 6.0.x through 6.0.19
OTRS versions 7.0.x through 7.0.7

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a malicious email to an OTRS system, prompting a logged-in user to quote the email and inadvertently load external image resources.

Mitigation and Prevention

To address and prevent the exploitation of CVE-2019-12248, follow these steps:

Immediate Steps to Take

Update OTRS to the latest patched version.
Educate users on identifying and avoiding suspicious emails.
Implement email filtering mechanisms to detect and block malicious content.

Long-Term Security Practices

Regularly monitor and audit email communications within the OTRS system.
Conduct security training for users to enhance awareness of email security best practices.

Patching and Updates

Apply security patches provided by OTRS promptly to mitigate the vulnerability and enhance system security.