FortiSandbox and FortiAuthenticator: Denial of Service -- Remote/Unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.2618
      FortiSandbox and FortiAuthenticator login modules vulnerability
                               4 August 2021

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           FortiSandbox
                   FortiAuthenticator
Publisher:         FortiGuard Labs
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-22124  

Original Bulletin: 
   https://fortiguard.com/psirt/FG-IR-20-170

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Uncontrolled Resource Consumption (Unauthenticated Denial of Service) in login module

IR Number    : FG-IR-20-170
Date         : Jul 30, 2021
Risk         : 4/5
CVSSv3 Score : 7.3
Impact       : Availability, Denial of Service
CVE ID       : CVE-2021-22124

Summary

An uncontrolled resource consumption (denial of service) vulnerability in
FortiSandbox and FortiAuthenticator login modules may allow an unauthenticated
attacker to bring the device into an unresponsive state via
specifically-crafted long request parameters.

Impact

Availability, Denial of Service

Affected Products

FortiSandbox 3.2.1 and below.
FortiSandbox 3.1.4 and below.
FortiSandbox 3.0.6 and below.
FortiAuthenticator 6.0.5 and below.
FortiAuthenticator 5.5.0 and below.
FortiAuthenticator 5.4.1 and below.
FortiAuthenticator 5.3.1 and below.
FortiAuthenticator 5.2.2 and below.
FortiAuthenticator 5.1.2 and below.
FortiAuthenticator 5.0.0 and below.
FortiAuthenticator 4.3.4 and below.

Solutions

Upgrade to FortiSandbox 4.0.0 or above.

Upgrade to FortiSandbox 3.2.2 or above.

Upgrade to FortiSandbox 3.1.5 or above.

Upgrade to FortiSandbox 3.0.7 or above.

Upgrade to FortiAuthenticator version 6.3.0 or above.

Upgrade to FortiAuthenticator version 6.2.0 or above.

Upgrade to FortiAuthenticator version 6.1.0 or above.

Upgrade to FortiAuthenticator version 6.0.6 or above.

Acknowledgement

Internally discovered and reported by Giuseppe Cocomazzi of Fortinet Product
Security team.

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