CVE-2023-0967 : Vulnerability Insights and Analysis

This article provides detailed information about CVE-2023-0967, a vulnerability found in Bhima version 1.27.0.

Understanding CVE-2023-0967

CVE-2023-0967 refers to a security issue in Bhima version 1.27.0 that allows a authenticated attacker with normal user permissions to access sensitive data of other application users and information that should only be accessible to the administrator. This vulnerability arises due to insecure direct object references (IDOR) in the application, which leads to inadequate validation of user permissions for specific actions.

What is CVE-2023-0967?

The CVE-2023-0967 vulnerability in Bhima version 1.27.0 enables a malicious user with regular permissions to view confidential data belonging to other users of the application and data that should only be accessed by the administrator. The issue is rooted in the application's insecure handling of user permissions, specifically in relation to certain actions authorized users can take.

The Impact of CVE-2023-0967

The impact of CVE-2023-0967 can be significant, as it allows unauthorized access to sensitive information that could compromise the confidentiality and integrity of data stored within the Bhima application. Attackers exploiting this vulnerability could potentially gather personal or confidential data, leading to privacy breaches and other security risks.

Technical Details of CVE-2023-0967

In this section, we delve into the technical details of CVE-2023-0967 to understand the vulnerability further.

Vulnerability Description

The vulnerability in Bhima version 1.27.0 arises from the insecure handling of user permissions, specifically in the context of IDOR. This flaw enables authenticated attackers with regular user permissions to access sensitive data meant for other users and information restricted to the administrator.

Affected Systems and Versions

The affected system in this case is the Bhima application, specifically version 1.27.0. Users utilizing this particular version of Bhima are vulnerable to exploitation by malicious actors exploiting this security flaw.

Exploitation Mechanism

The exploitation of CVE-2023-0967 involves an attacker leveraging the insecure object references within Bhima version 1.27.0 to gain unauthorized access to restricted data that should only be accessible to privileged users. By exploiting this vulnerability, attackers can bypass proper user permission validation mechanisms, leading to data compromise.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-0967 and prevent potential exploitation, users and administrators are advised to take the following steps:

Immediate Steps to Take

Upgrade to a patched version: Users of Bhima version 1.27.0 should update to a fixed version provided by the vendor to address the vulnerability.
Restrict user access: Limit access to sensitive data within the application to authorized personnel to minimize the risk of unauthorized access.

Long-Term Security Practices

Regular security assessments: Conduct routine security assessments and audits to identify and address potential vulnerabilities in the application.
User permissions review: Periodically review and validate user permissions to ensure that users only have access to the data necessary for their roles.

Patching and Updates

Stay up to date: Regularly apply security patches and updates released by the vendor to protect against known vulnerabilities and mitigate security risks in the application.