CVE-2023-6893 : Security Advisory and Response

This CVE-2023-6893 involves a vulnerability in the Hikvision Intercom Broadcasting System that allows path traversal through the

/php/exportrecord.php

file, affecting version 3.0.3_20201113_RELEASE(HIK). The issue can be exploited by manipulating the

downname

argument with specific input, leading to potential security risks.

Understanding CVE-2023-6893

This section delves into the details of the CVE-2023-6893 vulnerability affecting the Hikvision Intercom Broadcasting System.

What is CVE-2023-6893?

CVE-2023-6893 is a path traversal vulnerability found in the Hikvision Intercom Broadcasting System version 3.0.3_20201113_RELEASE(HIK). It allows attackers to navigate outside of the intended directory structure by manipulating certain input parameters, potentially accessing unauthorized files or directories.

The Impact of CVE-2023-6893

The impact of CVE-2023-6893 can be significant as attackers could exploit the path traversal vulnerability to access sensitive files or directories on the affected system. This could lead to unauthorized data disclosure or manipulation, compromising the system's integrity and confidentiality.

Technical Details of CVE-2023-6893

This section provides technical insights into the vulnerability, including its description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises from improper input validation in the

downname

parameter within the

/php/exportrecord.php

file of the Hikvision Intercom Broadcasting System. This flaw enables path traversal, allowing malicious actors to access files and directories outside the intended scope.

Affected Systems and Versions

The Hikvision Intercom Broadcasting System version 3.0.3_20201113_RELEASE(HIK) is confirmed to be affected by CVE-2023-6893, exposing systems running this specific version to the path traversal vulnerability.

Exploitation Mechanism

By manipulating the

downname

argument with a specific input value like

C:\\ICPAS\\Wnmp\\WWW\\php\\conversion.php

, threat actors can exploit the path traversal flaw in the exportrecord.php file, potentially gaining unauthorized access to critical system resources.

Mitigation and Prevention

Addressing CVE-2023-6893 requires immediate action to mitigate the associated risks and enhance the security posture of the affected systems.

Immediate Steps to Take

Users are advised to upgrade their Hikvision Intercom Broadcasting System to version 4.1.0 or higher to remediate the path traversal vulnerability.
Implement proper input validation mechanisms to prevent unauthorized access via the

downname

parameter.

Long-Term Security Practices

Regular security assessments and penetration testing can help identify and address vulnerabilities proactively.
Educate system administrators and users on best practices for secure system configurations and data access controls.

Patching and Updates

Stay informed about security updates and patches released by Hikvision for the Intercom Broadcasting System to safeguard against potential exploits.
Timely deployment of patches and updates is crucial to maintaining the integrity and security of the system.