medium6.8
CVE-2021-27208
When booting a Zync-7000 SOC device from nand flash memory, the nand driver in the ROM does not validate the inputs when reading in any parameters in the nand’…
Impact
When booting a Zync-7000 SOC device from nand flash memory, the nand driver in the ROM does not validate the inputs when reading in any parameters in the nand’s parameter page. IF a field read in from the parameter page is too large, this causes a buffer overflow that could lead to arbitrary code execution. Physical access and modification of the board assembly on which the Zynq-7000 SoC device mounted is needed to replace the original NAND flash memory with a NAND flash emulation device for this attack to be successful.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Xilinx | Zynq-7000s Firmware | All versions |
| Xilinx | Zynq-7000 Firmware | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- http://www.onfi.org/specifications
- https://www.xilinx.com/products/silicon-devices/soc/zynq-7000.html
- https://www.xilinx.com/support/answers/76201.html
- http://www.onfi.org/specifications
- https://www.xilinx.com/products/silicon-devices/soc/zynq-7000.html
- https://www.xilinx.com/support/answers/76201.html