SB2022050316 - Multiple vulnerabilities in Fortinet FortiOS

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Main Vulnerability Database SB2022050316

SB2022050316 - Multiple vulnerabilities in Fortinet FortiOS

Published: May 3, 2022

Security Bulletin ID SB2022050316
Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 secuirty vulnerabilities.


1) Information disclosure (CVE-ID: CVE-2021-43206)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output in server-generated error messages. A remote attacker can trick the victim to connect to a malicious webserver and retrieve a web proxy's client username and IP via same origin HTTP requests triggering proxy-generated HTTP status codes pages.


2) Improper Certificate Validation (CVE-ID: CVE-2022-22306)

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to improper certificate validation. A remote attacker on the local network can perform man-in-the-middle attack against communication between the FortiGate and some peers such as private SDNs and external cloud platforms.


3) Cross-site scripting (CVE-ID: CVE-2021-43081)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


4) Improper access control (CVE-ID: CVE-2021-41032)

The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote user with a restricted user profile can gather sensitive information and modify the SSL-VPN tunnel status of other VDOMs using specific CLI commands.


Remediation

Install update from vendor's website.

References