CVE-2020-15939 : Exploit Details and Defense Strategies

An improper access control vulnerability in FortiSandbox versions 3.2.1 and below and 3.1.4 and below may allow unauthorized access to device configuration files.

Understanding CVE-2020-15939

This CVE identifies a security flaw in Fortinet's FortiSandbox product that could be exploited by attackers to retrieve sensitive information.

What is CVE-2020-15939?

The vulnerability in FortiSandbox versions 3.2.1 and below and 3.1.4 and below enables authenticated but unprivileged users to download the device configuration file through a recovery URL.

The Impact of CVE-2020-15939

The vulnerability has a CVSS base score of 4.2 (Medium severity) and could result in unauthorized access to sensitive device configuration data.

Technical Details of CVE-2020-15939

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The improper access control vulnerability (CWE-284) allows authenticated attackers to download the device configuration file via the recovery URL.

Affected Systems and Versions

Product: Fortinet FortiSandbox
Versions: 3.2.1 and below, 3.1.4 and below

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Exploit Code Maturity: Functional
Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:F/RL:X/RC:X

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate action and long-term security practices.

Immediate Steps to Take

Apply vendor-supplied patches promptly
Monitor network traffic for any suspicious activity
Restrict access to sensitive configuration files

Long-Term Security Practices

Regularly update and patch software and firmware
Conduct security training for employees to recognize social engineering attacks

Patching and Updates

Fortinet has likely released patches to address this vulnerability
Regularly check for updates and apply them promptly