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             AUSCERT External Security Bulletin Redistribution

           FortiPortal - XML parser is vulnerable to XXE attacks
                             16 November 2021


        AusCERT Security Bulletin Summary

Product:           FortiPortal
Publisher:         FortiGuard
Operating System:  Network Appliance
Impact/Access:     Denial of Service        -- Existing Account
                   Access Confidential Data -- Existing Account
                   Reduced Security         -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-36172  

Original Bulletin: 

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FortiPortal - XML parser is vulnerable to XXE attacks

IR Number    : FG-IR-21-104
Date         : Nov 2, 2021
Risk         : 2/5
CVSSv3 Score : 3.8
Impact       : Information disclosure
CVE ID       : CVE-2021-36172
Affected Products: FortiPortal: 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0, 5.3.6, 5.3.5, 5.3.4, 5.3.3, 5.3.2, 5.3.1, 5.3.0, 5.2.6, 5.2.5, 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.1.2, 5.1.1, 5.1.0, 5.0.3, 5.0.2, 5.0.1, 5.0.0, 4.2.2, 4.2.1, 4.1.2, 4.1.1, 4.0.4, 4.0.3, 4.0.2, 4.0.1, 4.0.0
Language     : English


An improper restriction of XML external entity reference vulnerability
[CWE-611] in the parser of XML responses of FortiPortal may allow an attacker
who controls the producer of XML reports consumed by FortiPortal to trigger a
denial of service or read arbitrary files from the underlying file system by
means of specifically crafted XML documents.

Affected Products

FortiPortal version 6.0.5 and below.
FortiPortal version 5.3.6 and below.
FortiPortal version 5.2.6 and below.
FortiPortal version 5.1.2 and below.
FortiPortal version 5.0.3 and below.
FortiPortal version 4.2.4 and below.
FortiPortal version 4.1.2 and below.
FortiPortal version 4.0.4 and below.


Upgrade to FortiPortal version 6.0.6 or above.
Upgrade to FortiPortal version 5.3.7 or above.
Upgrade to FortiPortal version 5.2.7 or above.


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

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