CVE-2021-27208

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.

Weakness classification

• nvd@nist.gov: CWE-120

Primary references

• cve@mitre.org — Not Applicable
• cve@mitre.org — Product, Vendor Advisory
• cve@mitre.org — Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Not Applicable
• af854a3a-2127-422b-91ae-364da2661108 — Product, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory