CVE-2023-26428 : Security Advisory and Response

This CVE record outlines a security vulnerability identified as CVE-2023-26428 in the OX App Suite software developed by OX Software GmbH.

Understanding CVE-2023-26428

The vulnerability in question allows attackers to request arbitrary snippet IDs, including e-mail signatures of other users within the same context. This could potentially lead to unauthorized access to sensitive information. It is important to understand the impact, technical details, and mitigation strategies related to CVE-2023-26428.

What is CVE-2023-26428?

The vulnerability enables attackers to read signatures of other users that are not explicitly shared, by successfully requesting arbitrary snippet IDs within the same context. An improvement has been made in permission handling for requesting snippets not shared with other users, while no publicly available exploits are currently known.

The Impact of CVE-2023-26428

With a CVSS v3.1 base score of 6.5 (Medium severity), this vulnerability has a high impact on confidentiality, allowing unauthorized access to sensitive e-mail signatures. The attack vector is through the network with low complexity, and attackers can exploit it with low privileges required.

Technical Details of CVE-2023-26428

The following technical details shed light on the specifics of the vulnerability:

Vulnerability Description

Attackers can request arbitrary snippet IDs, gaining unauthorized access to e-mail signatures of other users within the same context even if not explicitly shared. Improved permission handling has been implemented for such requests.

Affected Systems and Versions

The vulnerability affects OX App Suite versions equal to or less than 7.10.6-rev39 and 8.9 under certain conditions, exposing them to this security threat.

Exploitation Mechanism

The vulnerability can be exploited by requesting arbitrary snippet IDs, leading to the unauthorized retrieval of e-mail signatures from other users in the same context.

Mitigation and Prevention

To address CVE-2023-26428, it is crucial to take immediate steps and implement long-term security practices to safeguard systems and data.

Immediate Steps to Take

Ensure that the affected versions of OX App Suite are updated to a secure version that addresses this vulnerability.
Monitor and restrict access to snippet IDs to prevent unauthorized requests.

Long-Term Security Practices

Regularly update and patch software to mitigate known vulnerabilities.
Implement least privilege access controls to limit unauthorized access to sensitive information.

Patching and Updates

Refer to the vendor's advisory and release notes for patch details and instructions on securing the OX App Suite software.
Stay informed about security advisories and updates from OX Software GmbH to protect against potential threats.

Stay vigilant and proactive in addressing CVE-2023-26428 to enhance the security posture of your systems and protect sensitive information from unauthorized access.