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AUSCERT External Security Bulletin Redistribution
ESB-2021.2384
FSSO Windows DC Agent - Access Confidential Data
14 July 2021
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AusCERT Security Bulletin Summary
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Product: FSSO Windows DC Agent
Publisher: Fortinet
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-26088
Original Bulletin:
https://www.fortiguard.com/psirt/FG-IR-20-191
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FSSO Windows DC Agent [FSSO] Insecure communication between DC agent and Collector
IR Number : FG-IR-20-191
Date : Jul 05, 2021
Risk : 3/5
CVSSv3 Score : 6.7
Impact : Unauthorized Access
CVE ID : CVE-2021-26088
Affected Products: FSSO Windows CA
FSSO Windows DC Agent
Summary
An improper authentication vulnerability [CWE-287] in FSSO Collector may allow
an unauthenticated user to bypass any firewall authentication rule and access
the protected network via sending specifically crafted UDP login notification
packets.
Impact
Unauthorized Access
Affected Products
Any FSSO DC Agent and Collector released with FOS 7.0.0 or below is impacted.
Any FSSO DC Agent and Collector released with FOS 6.4.5 or below is impacted.
Solutions
Upgrade the FSSO DC Agent and Collector with any version released with FOS
7.0.1 or above.
Upgrade the FSSO DC Agent and Collector with any version released with FOS
6.4.6 or above.
Acknowledgement
Fortinet is pleased to thank Jerome Dupuis for reporting this issue under
responsible disclosure.
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