FortiAnalyzer: Cross-site Scripting -- Existing Account

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.3289
         FortiAnalyzer - XSS vulnerability observed in the Column
                            settings of LogView
                              6 October 2021

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

Product:           FortiAnalyzer
Publisher:         FortiGuard
Operating System:  Network Appliance
Impact/Access:     Cross-site Scripting -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-24021  

Original Bulletin: 
   https://www.fortiguard.com/psirt/FG-IR-20-098

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FortiAnalyzer - XSS vulnerability observed in the Column settings of LogView

IR Number    : FG-IR-20-098
Date         : Oct 5, 2021
Risk         : 3/5
CVSSv3 Score : 4.2
Impact       : Unauthorized code execution
CVE ID       : CVE-2021-24021
Affected Products: FortiAnalyzer: 6.4.3, 6.4.2, 6.4.1, 6.4.0, 6.2.7, 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.10, 6.0.1, 6.0.0

Summary

An improper neutralization of input vulnerability [CWE-79] in FortiAnalyzer may
allow a remote authenticated attacker to perform a stored cross site scripting
attack (XSS) via the column settings of Logview in FortiAnalyzer, should the
attacker be able to obtain that POST request, via other, hypothetical attacks.

Affected Products

FortiAnalyzer version 6.4.3 and below.
FortiAnalyzer version 6.2.7 and below.
FortiAnalyzer version 6.0.x.

Solutions

Please upgrade to FortiAnalyzer version 6.4.4 or above.

Please upgrade to FortiAnalyzer version 6.2.8 or above.

Workaround:

Disable Log View/Fortiview access.
config system admin profile
edit set log-viewer none
next
end

Acknowledgement

Fortinet is pleased to thank Frank Cozijnsen of the KPN REDteam for reporting
this vulnerability under responsible disclosure.

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