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AUSCERT External Security Bulletin Redistribution
ESB-2019.2718
Improper check for certificate revocation vulnerability
22 July 2019
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AusCERT Security Bulletin Summary
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Product: FortiOS
FortiManager
FortiAnalyzer
Publisher: Fortinet
Operating System: Network Appliance
Impact/Access: Reduced Security -- Unknown/Unspecified
Resolution: Patch/Upgrade
Original Bulletin:
https://fortiguard.com/psirt/FG-IR-19-144
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Improper check for certificate revocation vulnerability
IR Number : FG-IR-19-144
Date : Jul 17, 2019
Risk : 5/5
Impact : Certificates taken out of service could potentially be improperly re-used
Summary
Certificates taken out of service could potentially be improperly re-used.
Impact detail
Fortinet has already taken steps to mitigate the risk; to be clear however,
pursuant to this CRITICAL-level alert, Fortinet strongly recommends that
customers upgrade the identified customer-side mitigations as shown under
"Solutions" below.
Impact
Certificates taken out of service could potentially be improperly re-used
Affected Products
FortiOS 6.2.0
FortiOS 6.0.5 and below
FortiOS 5.6.9 and below
FortiOS 5.4.11 and below
FortiOS 5.2.13 and below
FortiManager 6.2.0
FortiManager 6.0.5 and below
FortiManager 5.6.8 and below
FortiManager 5.4.6 and below
FortiAnalyzer 6.2.0
FortiAnalyzer 6.0.5 and below
FortiAnalyzer 5.6.8 and below
FortiAnalyzer 5.4.6 and below
Solutions
NOTE: THE SEVERITY MEANS IT IS CRITICAL THAT CUSTOMERS IMMEDIATELY IMPLEMENT
THE FIRMWARE UPDATE AND SIGNATURE UPDATE.
Fortinet is automatically implementing an IPS signature update for FortiOS to
mitigate the risk and help protect customers.
In addition, it is strongy advised that customers apply the software update
located at: https://support.fortinet.com The software should be updated
manually: I.e., go to https://support.fortinet.com, download the appropriate
firmware version, above, and install it on your device (via tftp, USB drive,
etc.).
FortiOS 6.2.1
FortiOS 6.0.6
FortiOS 5.6.10
FortiOS 5.4.12
FortiOS 5.2.14
FortiManager 6.2.1
FortiManager 6.0.6
FortiManager 5.6.9
FortiManager 5.4.7
FortiAnalyzer 6.2.1
FortiAnalyzer 6.0.6
FortiAnalyzer 5.6.9
FortiAnalyzer 5.4.7
If you need assistance, or if customers have experienced any indicators that
may be suspicious or indicators of compromise please contact customer service
at https://support.fortinet.com
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This security bulletin is provided as a service to AusCERT's members. As
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
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On call after hours for member emergencies only.
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