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Description |
This article describes how to use a custom event handler in FortiAnalyzer to raise alerts for incident response related to attacks that attempt to leverage the OpenSSL Email address buffer overflow vulnerability. A report is also provided to gain historical visibility into the logs. |
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Scope |
This article contains the files necessary to load an event handler and report into the FortiAnalyzer for either a Fabric ADOM or a FortiGate ADOM. The Fabric report and event handler leverage logs from other Fortinet products that can be used to detect the attack in addition to FortiGate logs. For more information about this attack, see the following FortiGuard Threat Signal Report: |
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Solution |
What is included in Fortinet_OpenSSL_Certificate_Buffer_Overflow.zip?
1) OpenSSL_Certificate_Buffer_Overflow_event-handler.json This event handler helps identify OpenSSL_Certificate_Buffer_Overflow detected by FortiGates and other Fortinet products.
2) OpenSSL_Certificate_Buffer_Overflow_report.dat This report displays the findings on OpenSSL_Certificate_Buffer_Overflow attacks from FortiGates and other Fortinet products.
3) fgt_OpenSSL_Certificate_Buffer_Overflow_event-handler.json The event handler for FortiGate ADOMs is configured for FortiGate logs only.
4) fgt_OpenSSL_Certificate_Buffer_Overflow_report.dat The report for FortiGate ADOMs includes FortiGate charts only.
Steps 1) Download the Fortinet_OpenSSL_Certificate_Buffer_Overflow.zip file (contains 4 files).
2) Unzip Fortinet_OpenSSL_Certificate_Buffer_Overflow.zip.
3) Import OpenSSL_Certificate_Buffer_Overflow_event-handler.json or the fgt_OpenSSL_Certificate_Buffer_Overflow_event-handler.json event handler:
- Choose an ADOM (if ADOMs are enabled). The ADOM may be of type Fabric or FortiGate: - Choose the FortiSOC module. - Select Event Handler List. - Select the Import option under More. - Select the appropriate event handler depending on the ADOM type.
Result: The event handler is enabled and will be triggered if the appropriate logs are received following the import of the event handler. Edit the event handler to customize the notification section.
4) Import OpenSSL_Certificate_Buffer_Overflow_report.dat or fgt_OpenSSL_Certificate_Buffer_Overflow_report.dat to Reports:
- Choose an ADOM (if ADOMs are enabled). The ADOM may be of type Fabric or FortiGate. - Select the appropriate file for the ADOM type to add the report to the ADOM.
Result: The OpenSSL Certificate Buffer Overflow report can be run at any time as determined by an admin user. |
