CVE-2023-26449 : Exploit Details and Defense Strategies

This CVE record was published on August 2, 2023, and updated on January 12, 2024, by OX. It pertains to a vulnerability in the "OX Chat" web service of the OX App Suite software by OX Software GmbH.

Understanding CVE-2023-26449

This CVE focuses on a specific vulnerability within the "OX Chat" web service that could allow malicious script code to be executed within a victim's context. This could potentially lead to session hijacking, triggering unwanted actions via the web interface and API.

What is CVE-2023-26449?

The vulnerability arises from the fact that the "OX Chat" web service did not specify a media-type when processing responses by external resources. An attacker could exploit this flaw by gaining temporary access to a user's account or luring a user to a compromised account. It is important to note that no publicly available exploits for this vulnerability are known at this time.

The Impact of CVE-2023-26449

The impact of CVE-2023-26449 is classified as medium severity with a CVSS v3.1 base score of 5.4. The attack complexity is low, requiring network access and low privileges. While the availability impact is none, the confidentiality and integrity impacts are low. User interaction is required, and the scope of the attack is changed.

Technical Details of CVE-2023-26449

This section delves into the specific technical aspects of the CVE, including vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability, classified under CWE-79, is due to improper neutralization of input during web page generation, commonly known as 'Cross-site Scripting' (XSS). This allows malicious script code to be executed in the victim's context.

Affected Systems and Versions

The vulnerability affects the "OX Chat" web service within the OX App Suite software, specifically versions less than or equal to 7.10.6-rev27.

Exploitation Mechanism

To exploit this vulnerability, an attacker would need to take advantage of the lack of media-type specification in the "OX Chat" web service's processing of responses by external resources. This could be achieved by gaining temporary access to a user's account or tricking a user into accessing a compromised account.

Mitigation and Prevention

In response to CVE-2023-26449, it is crucial to take immediate steps to mitigate the risk and prevent potential exploitation.

Immediate Steps to Take

Users and administrators are advised to update their OX App Suite software to a non-vulnerable version. It is also recommended to define accepted media types to avoid code execution and enhance overall system security.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and educating users about potential threats such as XSS attacks are essential for long-term security resilience.

Patching and Updates

Maintaining up-to-date software patches and security updates for the OX App Suite software is vital to address known vulnerabilities and enhance the overall security posture of the system.