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After upgrading to FortiOS 7.2.5 or 7.4.0, CPU utilization may be too high after the certificate bundle is upgraded from 1.00043 to 1.00044/1.00045/1.00046/1.00047.
All of the following FortiOS versions are affected:
- FortiOS version 7.2.1 through 7.2.5.
- FortiOS version 7.4.0.
To identify the daemon that uses a high CPU, run the command below:
diag sys top 1
In the following FortiGate that is running on FortiOS 7.2.5, it is observed that the eap_proxy daemon is running on a high CPU:
diag sys top 1
Run Time: 1 days, 3 hours and 24 minutes
3U, 0N, 9S, 88I, 0WA, 0HI, 0SI, 0ST; 3614T, 1763F
eap_proxy 886 R 99.9 0.3 2
To confirm if the eap_proxy is having an issue, proceed to check the crash log with the following command:
diag deb crashlog read
The eap-proxy has been restarting every few seconds:
diag debug crashlog read
1: 2023-07-05 10:33:12 the killed daemon is /bin/eap_proxy: status=0x0
2: 2023-07-05 10:33:14 the killed daemon is /bin/eap_proxy: status=0x0
3: 2023-07-05 10:33:17 the killed daemon is /bin/eap_proxy: status=0x0
4: 2023-07-05 10:33:19 the killed daemon is /bin/eap_proxy: status=0x0
If FortiGate had recently upgraded the certificate bundle from 1.00043 to 1.00044, 1.00045, 1.00046 or 1.00047, the respective is matching a known bug. It is then, necessary to check the certificate bundle version with the following command:
The trigger condition is not tied to certain certificate bundle versions. Any certificate bundle version upgrade can potentially trigger this behavior.
diag autoupdate versions | grep -A6 "Certificate"
Certificate Bundle
---------
Version: 1.00045
Contract Expiry Date: n/a
Last Updated using scheduled update on Thu Jul 6 08:33:53 2023
Last Update Attempt: Thu Jul 6 08:33:53 2023
Result: Updates Installed
If all three of the symptoms match, it would be a match to bug 923164 documented in the FortiOS 7.4.0 release note:
Known issues 7.4.0
Workaround:
Reboot FortiGate or restart the eap_proxy process in the CLI:
fnsysctl killall eap_proxy
To verify the process ID before and after executing the first command:
diagnose sys process pidof eap_proxy
Solution:
- Upgrade to FortiOS version 7.2.6 or above.
- Upgrade to FortiOS version 7.4.1 or above.
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