CVE-2023-23782 : Vulnerability Insights and Analysis

This CVE-2023-23782 relates to a heap-based buffer overflow vulnerability found in Fortinet FortiWeb versions 6.0.0 through 7.0.1. This vulnerability could allow an attacker to escalate privileges by utilizing specifically crafted arguments within existing commands.

Understanding CVE-2023-23782

This section will delve into the details of the CVE-2023-23782 vulnerability, its impact, technical descriptions, affected systems, exploitation mechanism, and mitigation strategies.

What is CVE-2023-23782?

The CVE-2023-23782 vulnerability is a heap-based buffer overflow issue present in multiple versions of Fortinet FortiWeb, including 6.0.0 through 7.0.1. This flaw enables malicious actors to elevate their privileges by inserting specially crafted arguments into current commands.

The Impact of CVE-2023-23782

With a CVSS v3.1 base score of 7.1 (High Severity), this vulnerability is notably impactful. It has a low attack complexity and requires low privileges to exploit. The confidentiality, integrity, and availability of affected systems are all at high risk.

Technical Details of CVE-2023-23782

Let's explore the technical specifics of CVE-2023-23782, including its vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from a heap-based buffer overflow in Fortinet FortiWeb versions 6.0.0 through 7.0.1. By sending specially crafted arguments to existing commands, an attacker could exploit this flaw to escalate their privileges within the system.

Affected Systems and Versions

Fortinet FortiWeb versions impacted by this vulnerability include 7.0.0 through 7.0.1, 6.3.0 through 6.3.19, 6.4.0 through 6.4.2, 6.2.0 through 6.2.7, 6.1.0 through 6.1.3, and 6.0.0 through 6.0.8.

Exploitation Mechanism

Attackers can leverage this vulnerability by inserting specifically crafted arguments into existing commands, triggering a heap-based buffer overflow that leads to an escalation of privileges.

Mitigation and Prevention

In order to safeguard systems from the CVE-2023-23782 vulnerability, immediate steps, long-term security practices, and the importance of applying patches and updates are crucial.

Immediate Steps to Take

Users are advised to upgrade to FortiWeb version 7.0.2 or above, or upgrade to FortiWeb version 6.3.20 or above to mitigate the risks associated with this vulnerability.

Long-Term Security Practices

Implementing strong security measures, such as restricting access rights, monitoring system activity, and conducting regular security audits, can help prevent and detect similar vulnerabilities in the future.

Patching and Updates

Regularly applying security patches and updates provided by Fortinet is essential for maintaining the integrity and security of FortiWeb systems and protecting them from potential exploits.