CVEvulnerability
CVE-2021-27208
6.8 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-03-15
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.8 MEDIUM — CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-120
Description
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 configurations
• xilinx zynq-7000s firmware
• xilinx zynq-7000 firmware
Related
Weakness · CWE (1)
- CWE-120 Buffer Copy without Checking Size of Input weakness
References
- http://www.onfi.org/specifications Not Applicable
- https://www.xilinx.com/products/silicon-devices/soc/zynq-7000.html Product, Vendor Advisory
- https://www.xilinx.com/support/answers/76201.html Vendor Advisory
- http://www.onfi.org/specifications Not Applicable
- https://www.xilinx.com/products/silicon-devices/soc/zynq-7000.html Product, Vendor Advisory
- https://www.xilinx.com/support/answers/76201.html Vendor Advisory