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             AUSCERT External Security Bulletin Redistribution

             FortiOS SSL VPN user credential plaintext storage
                             28 September 2021


        AusCERT Security Bulletin Summary

Product:           FortiOS
Publisher:         Fortiguard
Operating System:  Network Appliance
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-17655  

Reference:         ESB-2020.0320

Original Bulletin: 

Revision History:  September 28 2021: Vendor updated Affected Products and Solution details
                   June      29 2020: Initial Release

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FortiOS SSL VPN user credential plaintext storage

IR Number        : FG-IR-19-217
Date             : Sep 7, 2021
Risk             : 3/5
Impact           : Information Disclosure
CVE ID           : CVE-2019-17655
Affected Products: FortiOS: 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, 6.0.1, 6.0.0, 5.6.9, 5.6.8, 5.6.7, 5.6.6, 
                   5.6.5, 5.6.4, 5.6.3, 5.6.2, 5.6.13, 5.6.12, 5.6.11, 5.6.10, 5.6.1, 
                   5.6.0, 5.4.9, 5.4.8, 5.4.7, 5.4.6, 5.4.5, 5.4.4, 5.4.3, 5.4.2, 
                   5.4.13, 5.4.12, 5.4.11, 5.4.10, 5.4.1, 5.4.0, 5.2.9, 5.2.8, 5.2.7, 
                   5.2.6, 5.2.5, 5.2.4, 5.2.3, 5.2.2, 5.2.15, 5.2.14, 5.2.13, 5.2.12, 
                   5.2.11, 5.2.10, 5.2.1, 5.2.0
Language         : English


A cleartext storage in a file or on disk (CWE-313) vulnerability in FortiOS SSL
VPN may allow an attacker to retrieve a logged-in SSL VPN user's credentials
should that attacker be able to read the session file stored on the targeted
device's system.

To successfully exploit this weakness, another unrelated weakness (eg: a system
file leaking vulnerability) would therefore need to be exploited first.

Affected Products

FortiOS 6.2.0 to 6.2.2, 6.0.9 and below, 5.6.13 and below


Upgrade to FortiOS 5.6.14 or 6.0.10 or 6.2.3 or above

Revision History:
2020-01-27 Initial Version
2020-06-26 New fix on 6.0.10 released.
2021-07-29 New fix on 5.6.14 released.


  o https://blog.orange.tw/2019/08/

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