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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.2170
   FortiAnalyzer could potentially be used in NTP amplification attacks
                               23 June 2020

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

Product:           FortiAnalyzer
Publisher:         Fortiguard
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade

Original Bulletin: 
   https://fortiguard.com/psirt/FG-IR-20-036

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FortiAnalyzer could potentially be used in NTP amplification attacks

IR Number : FG-IR-20-036

Date      : Jun 22, 2020

Risk      : 3/5

Impact    : DoS, NTP amplification attacks

CVRF      : Download

Summary

An insufficient control of network message volume (CWE-406) vulnerability in
FortiAnalyzer may allow an unauthenticated remote attacker to perform NTP
amplification attacks (thereby causing reflected denial of service on arbitrary
targets) via sending specially crafted mode 6 queries to the FortiAnalyzer
built-in NTP server.

Impact

DoS, NTP amplification attacks

Affected Products

FortiAnalyzer 6.4.0, 6.2.3 and below (*)


* only models that support FortiRecorder management are impacted:


FAZ_200F

FAZ_300F

FAZ_400E

FAZ_800F.

FAZ_1000E

FAZ_1000F

FAZ_2000E

FAZ_3000F

FAZ_3500G

FAZ_3700F

FAZ_VM64

FAZ_VM64_KVM

Solutions

Upgrade to FortiAnalyzer 6.2.4 or 6.4.1

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
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