CVE-2019-18180 : What You Need to Know

CVE-2019-18180 is a vulnerability in PostMaster of the ((OTRS)) Community Edition and OTRS, allowing remote attackers to create an endless loop by exploiting an improper check for filenames with excessively long extensions.

Understanding CVE-2019-18180

What is CVE-2019-18180?

The vulnerability in PostMaster of ((OTRS)) Community Edition and OTRS arises from an inadequate check for filenames with extremely long extensions during email sending or file uploading processes.

The Impact of CVE-2019-18180

This vulnerability can be exploited by remote attackers to trigger an endless loop, potentially leading to a denial of service (DoS) condition.

Technical Details of CVE-2019-18180

Vulnerability Description

The flaw affects ((OTRS)) Community Edition 5.0.x versions up to 5.0.38, 6.0.x versions up to 6.0.23, and OTRS 7.0.x versions up to 7.0.12.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: ((OTRS)) Community Edition 5.0.x, 6.0.x, and OTRS 7.0.x

Exploitation Mechanism

The vulnerability can be exploited remotely by sending emails or uploading files with filenames containing excessively long extensions.

Mitigation and Prevention

Immediate Steps to Take

Upgrade to OTRS 7.0.13, OTRS 6.0.24, or OTRS 5.0.39
Apply patches for ((OTRS)) Community Edition 6.0 and 5.0

Long-Term Security Practices

Regularly update software to the latest versions
Implement file upload restrictions and proper input validation
Conduct security assessments and audits

Patching and Updates

Patch for ((OTRS)) Community Edition 6.0: Patch Link
Patch for ((OTRS)) Community Edition 5.0: Patch Link