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Yemelyan Rodionov
Yemelyan Rodionov

Open Boot Device Failed Fortigate



Unlike updating firmware, restoring firmware re-images the boot device, including the signatures that were current at the time that the firmware image file was created. Also, restoring firmware can only be done during a boot interrupt, before network connectivity is available, and therefore requires a local console connection to the CLI. It cannot be done through an SSH or Telnet connection.




open boot device failed fortigate


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Due to an incorrect partition of the flash storage device, the FortiGate 80C may fail to boot-up. The flash disk capacity should be 7640MB in size, devices that report a flash disk size of 7636MB have a hidden partition (4MB) which may prevent the FortiGate from booting up if it attempts to locate the operating system image in this partition.


Mandiant suspected the FortiGate and FortiManager devices were compromised due to the connections to VIRTUALPITA from the Fortinet management IP addresses. Additionally, the FortiGate devices with Federal Information Processing Standards (FIPS) compliance mode enabled failed to boot after it was later rebooted. When FIPS mode is enabled, a checksum of the operating system is compared with the checksum of a clean image. Since the operating system was tampered by the threat actor, the checksum comparison failed, and the FortiGate Firewalls protectively failed to startup. With assistance from Fortinet, Mandiant acquired a forensic image of these failing devices, prompting the discovery of the ICMP port knocking backdoor CASTLETAP.


Mandiant identified that a variant of this malicious API call was also present on a FortiAnalyzer device. While the backdoor function in views.py, get_device_info, was the same as FortiManager, the API call used to access the backdoor was changed to /p/utils/fortigate_syslog_send on the FortiAnalyzer device, as seen in Figure 6.


By default, Fortinet devices running FortiOS have an archive on disk labelled rootfs.gz within the /data/ partition. Upon boot, this file is mounted as the root filesystem. This means if modifications are made to the mounted image, the changes will not be persistent unless they are written to the rootfs.gz archive. FortiGate firewalls do not support files being exported from the mounted filesystem during runtime. Since the modifications made to /bin/lspci and /bin/sysctl were not written to the rootfs.gz archive, they were not installed persistently and could not be further analyzed.


In an attempt to skip digital signature verification checks made to the file system on boot, the threat actor added the command seen in Figure 23 to the startup config /etc/init.d/localnet within the rootfs.gz archive of both FortiManager and FortiAnalyzer devices.


The unknown attackers modified the device firmware image (/sbin/init) to launch a persistent payload (/bin/fgfm) before the boot process began that allowed them to download and write files, open remote shells and exfiltrate data after attacks that began with the exploitation of CVE-2022-41328, which affects FortiOS.


I'm using Workstation Pro 15.5 and have been running this VM since September. I've enabled AutoProtect on it with hourly snapshots, up to 3. Yesterday, Windows 10 decided to put the laptop to standby, when I woke it up, it gave me a Blue Screen of Death (BSOD), crash dumped, and rebooted. After the reboot, I was unable to power on my VM, with the error message: "Unable to open file .vmdk. One of the disks in this virtual machine is already in use by a virtual machine or by a snapshot."


I have a eve-ng laptop that i'm planning to use for practice. I have installed the KVM file and activated it as well as added it to the eve-ng lab. However, when i start the device. I get the error message "No bootable Device". This device is currently configured to use PA8.0.5 in the EVE-NG environment.


Computers can boot over a network in several ways, and PXE is one of them. PXE works with the system's NIC by making it function like a boot device. PXE evolved from the era before computers had internal disk drives.


In the DHCP server, Option 66 or 67 are configured under scope or server options with the required information. Option 66 specifies which server to contact, and Option 67 specifies the name of the file to request. This method helps with the loading and launching of the boot files for the client system. It works well when clients and servers are on the same part of the network, and if only one type of device architecture is being used.


PXE and TFTP were originally designed for unstable networks operating at low speeds. But now, as Gigabit networks become more common, PXE and its related protocols are outdated. IPXE is an open source network boot firmware licensed under the GNU GPL. IPXE is included by default in products from many network card manufacturers and OEMs.


Once the hard disk eventually failed, you can replace it with a new hard drive and perform disk restore. If you encounter "hard disk imminent failure won't boot", you can create a bootable media on other working computers first, use it to boot the computer into WinPE and perform system restore.


If any of the commands generate an error, boot pfSense software installationmedia and perform the commands from a shell launched through the installermenu . When booted from install media, the disks in the device will not bemounted and can be safely cleared.


Notes: In Windows XP, you might have to go to Control Panel -> System to access the device manager. Depending on your OS, you might be prompted to reboot after the drive is installed. Keep in mind that the size of your Ramdisk is substracted from the available RAM, so don't use any wild values. Depending on the intended use, 1 - 16 MB should be the enough, even in systems with plenty of RAM.


Notes: In Windows XP, you might have to go to Control Panel -> System to access the device manager. Depending on your OS, you might be prompted to reboot after the drive is installed. Keep in mind that the size of your Ramdisk is substracted from the available RAM, so don't use any wild values. Depending on the intended use, 1 - 16 MB should be the enough, even in systems with plenty of RAM.


When the access point does not respond or continuously reboots, the cause can be a corrupted firmware image. If the wireless device has a firmware failure, the image file must be reloaded. You can use the Web browser interface to reload the image file if the wireless device firmware is still fully operational and if you want to upgrade the firmware image.


Follow the steps below to reload the wireless device image using the CLI. When the wireless device begins to boot, interrupt the boot process and use boot loader commands to load an image from a TFTP server to replace the image in the wireless device.


Step 8 Enter the set BOOT command to designate the new image as the image that the wireless device uses when it reboots. The wireless device creates a directory for the image that has the same name as the image, and you must include the directory in the command. Your entry might look like this example:


That was the problem. I only showed hidden files and folder but did not scrolled down to see those other boxes. I got to find this out while stil searching google for solution from -technologies/tag/the-system-is-unable-to-boot-automatically-because-there-are-no-bootable-files/ when the opened the ios with WinRar. I followed the steps but did not use a switch because it was timing out when I use the switch. So your reply came in a little too late.


Fortinet says this happens because its FIPS-enabled devices verify system components' integrity, and they are configured to automatically shut down and stop booting to block a network breach if a compromise is detected.


This option affects the current state of the domain. If the domain is inactive, the device is added to the persistent XML and will be available on next boot. If the domain is active, the device is hotplugged but not added to the persistent XML.


Hey NH,please open a ticket at Fortinet. I had some HTTP 400 errors as well during the last years and it was sometimes much more complicated than only a single setting. (However, you can try to reboot the device first. ;)) 041b061a72


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