CVE-2018-5753 : Security Advisory and Response

Open-Xchange OX App Suite versions prior to 7.6.3-rev31, 7.8.x before 7.8.2-rev31, 7.8.3 before 7.8.3-rev41, and 7.8.4 before 7.8.4-rev20 have a vulnerability allowing remote attackers to falsify email origins.

Understanding CVE-2018-5753

This CVE identifies a vulnerability in the frontend element of Open-Xchange OX App Suite that can be exploited by attackers to manipulate email origins.

What is CVE-2018-5753?

The vulnerability in Open-Xchange OX App Suite versions allows remote attackers to spoof the origin of emails by using Unicode characters in the 'personal part' of the From or Sender addresses.

The Impact of CVE-2018-5753

Remote attackers can falsify the origin of emails, potentially leading to phishing attacks or email spoofing.

Technical Details of CVE-2018-5753

This section provides more technical insights into the vulnerability.

Vulnerability Description

The frontend component in Open-Xchange OX App Suite versions before specified releases allows attackers to spoof email origins using Unicode characters.

Affected Systems and Versions

Open-Xchange OX App Suite versions prior to 7.6.3-rev31, 7.8.x before 7.8.2-rev31, 7.8.3 before 7.8.3-rev41, and 7.8.4 before 7.8.4-rev20 are affected.

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting Unicode characters in the 'personal part' of the From or Sender addresses to falsify email origins.

Mitigation and Prevention

Protecting systems from this vulnerability is crucial to prevent email spoofing and phishing attacks.

Immediate Steps to Take

Update Open-Xchange OX App Suite to versions 7.6.3-rev31, 7.8.2-rev31, 7.8.3-rev41, or 7.8.4-rev20 to mitigate the vulnerability.
Educate users about email security best practices to avoid falling victim to email spoofing.

Long-Term Security Practices

Regularly monitor and audit email traffic for any suspicious activities.
Implement email authentication mechanisms like SPF, DKIM, and DMARC to enhance email security.

Patching and Updates

Apply security patches provided by Open-Xchange promptly to address this vulnerability.