CVE-2021-27208
CVSS V2 Medium 4.6
CVSS V3 Medium 6.8
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.
Overview
- CVE ID
- CVE-2021-27208
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-03-15T13:15:14
- Last Modified Date
- 2021-03-30T12:52:36
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:xilinx:zynq-7000s_firmware:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:xilinx:zynq-7000s:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:xilinx:zynq-7000_firmware:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:xilinx:zynq-7000:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 4.6
- Severity
- MEDIUM
- Exploitability Score
- 3.9
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- PHYSICAL
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 6.8
- Base Severity
- MEDIUM
- Exploitability Score
- 0.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| 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 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-27208 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27208 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:18:14 | Added to TrackCVE | |||
| 2022-12-05 23:44:12 | 2021-03-15T13:15Z | 2021-03-15T13:15:14 | CVE Published Date | updated |
| 2022-12-05 23:44:12 | 2021-03-30T12:52:36 | CVE Modified Date | updated | |
| 2022-12-05 23:44:12 | Analyzed | Vulnerability Status | updated |