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AUSCERT External Security Bulletin Redistribution
FortiOS - Missing certificate CN/SAN validation leads to
16 November 2021
AusCERT Security Bulletin Summary
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Remote with User Interaction
CVE Names: CVE-2021-41019
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FortiOS - Missing certificate CN/SAN validation leads to information disclosure
IR Number : FG-IR-21-074
Date : Nov 2, 2021
Risk : 2/5
CVSSv3 Score : 3.2
Impact : Information disclosure
CVE ID : CVE-2021-41019
Affected Products: FortiOS: 6.4.6, 6.4.5, 6.4.4, 6.4.3, 6.4.2, 6.4.1, 6.4.0, 6.2.9, 6.2.8, 6.2.7, 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 7.0.0., 7.0.1
Language : English
An improper validation of certificate with host mismatch [CWE-297]
vulnerability in FortiOS may allow the connection to a malicious LDAP server
via options in GUI, leading to disclosure of sensitive information, such as AD
FortiGate version 7.0.1 and below.
FortiGate version 6.4.6 and below.
FortiGate version 6.2.9 and below.
Please upgrade to FortiGate version 7.0.2 or above.
Please upgrade to FortiGate version 6.4.7 or above.
Please upgrade to FortiGate version 6.2.10 or above.
Fortinet is pleased to thank John Headley from VPLS for reporting this
vulnerability under responsible disclosure.
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