FG-IR-20-231: [FortiProxy] SSL VPN account hijack (unauthorized modification of users passwords)

Published Jun 1, 2021
·
Updated

An improper access control vulnerability in FortiProxy SSL VPN web portal may allow an unauthenticated and remote attacker to change local SSL-VPN users' passwords via specially crafted HTTP requests.

Affected Software

1 affected component
Fortinet FortiProxy

Event History

Aug 20, 2026
Advisory Published
via FortiGuard·11:51 AM
Data Sourced
via FortiGuard·11:51 AM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of FG-IR-20-231?

The severity of FG-IR-20-231 is classified as high due to its potential impact on user account security.

2

How do I fix FG-IR-20-231?

To fix FG-IR-20-231, ensure to apply the latest security patches provided by Fortinet for FortiProxy.

3

What kind of attack does FG-IR-20-231 allow?

FG-IR-20-231 allows unauthenticated attackers to change local SSL-VPN users' passwords through crafted HTTP requests.

4

Which version of FortiProxy is affected by FG-IR-20-231?

FortiProxy versions are affected by FG-IR-20-231 based on the specific configurations that allow improper access control.

5

What steps can I take to mitigate the risk of FG-IR-20-231?

To mitigate the risk of FG-IR-20-231, restrict access to the SSL VPN web portal and regularly monitor user activity.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
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