VDB-171256 · CVE-2021-27208 · GCVE-0-2021-27208

Xilinx Zynq-7000 nand Driver any buffer overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.7	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Xilinx Zynq-7000. This affects an unknown function of the component nand Driver. Executing a manipulation of the argument any can lead to buffer overflow. This vulnerability is handled as CVE-2021-27208. The physical device can be targeted for the attack. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Xilinx Zynq-7000 (affected version unknown) and classified as critical. This vulnerability affects an unknown functionality of the component nand Driver. The manipulation of the argument any with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 03/15/2021. The advisory is shared for download at xilinx.com. This vulnerability was named CVE-2021-27208. There are known technical details, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Xilinx

Name

Zynq-7000

CPE 2.3info

🔍

CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.6
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.8
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/12/2021 🔍
03/15/2021 +31 days 🔍
03/15/2021 +0 days 🔍
04/01/2021 +17 days 🔍

Sourcesinfo

Advisory: xilinx.com
Status: Confirmed

CVE: CVE-2021-27208 (🔍)
GCVE (CVE): GCVE-0-2021-27208
GCVE (VulDB): GCVE-100-171256

Entryinfo

Created: 03/15/2021 18:13
Updated: 04/01/2021 12:27
Changes: 03/15/2021 18:13 (36), 04/01/2021 12:20 (2), 04/01/2021 12:27 (18)
Complete: 🔍
Cache ID: 216::103