CVE-2023-26432 : Vulnerability Insights and Analysis

This CVE record, assigned by OX, was published on June 20, 2023. The vulnerability was updated on January 12, 2024. It affects the OX App Suite software developed by OX Software GmbH.

Understanding CVE-2023-26432

This CVE, identified as CVE-2023-26432, highlights a security issue in the OX App Suite software. The vulnerability could potentially be exploited by attackers to cause service unavailability due to excessive resource usage by triggering requests with rogue SMTP service capabilities.

What is CVE-2023-26432?

The vulnerability in OX App Suite allows attackers with access to a malicious SMTP service to send requests that lead to excessive resource consumption. By exploiting this flaw, an attacker could potentially disrupt the service availability by triggering requests with large SMTP server responses.

The Impact of CVE-2023-26432

The impact of CVE-2023-26432 is rated as MEDIUM with a CVSS base score of 4.3. This vulnerability poses a threat to the availability of the affected systems without directly impacting confidentiality or integrity. The attack complexity is low, requiring only network access and low privileges.

Technical Details of CVE-2023-26432

This section provides more in-depth technical details about the vulnerability in OX App Suite.

Vulnerability Description

The vulnerability arises from the insecure processing of SMTP "capabilities" responses, allowing attackers to trigger requests that result in excessive resource consumption and service unavailability.

Affected Systems and Versions

The vulnerability affects OX App Suite versions less than or equal to 7.10.6-rev39 and 8.10.

Exploitation Mechanism

Attackers with access to a rogue SMTP service can exploit this vulnerability by sending requests with large SMTP server responses, leading to service unavailability.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-26432, users and administrators are advised to take the following steps:

Immediate Steps to Take

Update to the latest version of OX App Suite to patch the vulnerability.
Monitor SMTP traffic for any suspicious activities that could indicate exploitation attempts.
Limit access to SMTP services only to trusted sources.

Long-Term Security Practices

Regularly update software and apply security patches to prevent known vulnerabilities.
Conduct regular security assessments and audits to identify and address potential security gaps.
Implement network security measures to protect against unauthorized access and malicious activities.

Patching and Updates

Users of OX App Suite should refer to the vendor advisory for detailed information on the patch release and instructions for updating the software to address CVE-2023-26432. Additionally, monitoring security channels for any future updates or advisories is recommended to stay informed about potential security risks.