SB2022101027 - Multiple vulnerabilities in Fortinet FortiTester

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Improper Restriction of Excessive Authentication Attempts (CVE-ID: CVE-2022-35846)

The vulnerability allows a remote attacker to perform a brute-force attack.

The vulnerability exists due to missing brute-force protection within the Telnet service. A remote non-authenticated attacker can guess credentials of an admin user via a brute force attack.

2) OS Command Injection (CVE-ID: CVE-2022-35844)

The vulnerability allows a local user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the management interface. A local user can pass specifically crafted arguments to commands of the certificate import feature and execute arbitrary OS commands on the system.

3) OS Command Injection (CVE-ID: CVE-2022-33873)

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation within the Console, Telnet, and SSH login components. A remote unauthenticated attacker can send a specially crafted request to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://fortiguard.fortinet.com/psirt/FG-IR-22-244
• https://fortiguard.fortinet.com/psirt/FG-IR-22-247
• https://fortiguard.fortinet.com/psirt/FG-IR-22-237