VDB-177045 · CVE-2021-21556 · GCVE-0-2021-21556

Dell PowerEdge T640 NVDIMM-N stack-based 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.
4.0	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Dell PowerEdge R640, PowerEdge R740, PowerEdge R740XD, PowerEdge R840, PowerEdge R940, PowerEdge R940xa, PowerEdge MX740c, PowerEdge MX840c and PowerEdge T640. Affected by this vulnerability is an unknown functionality of the component NVDIMM-N. Performing a manipulation results in stack-based overflow. This vulnerability is known as CVE-2021-21556. Attacking locally is a requirement. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Dell PowerEdge R640, PowerEdge R740, PowerEdge R740XD, PowerEdge R840, PowerEdge R940, PowerEdge R940xa, PowerEdge MX740c, PowerEdge MX840c and PowerEdge T640. It has been classified as critical. This affects an unknown functionality of the component NVDIMM-N. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 06/15/2021. The advisory is shared at dell.com. This vulnerability is uniquely identified as CVE-2021-21556. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

Dell

Name

License

commercial

Website

Vendor: https://www.dell.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/04/2021 🔍
06/15/2021 +161 days 🔍
06/15/2021 +0 days 🔍
06/18/2021 +3 days 🔍

Sourcesinfo

Vendor: dell.com

Advisory: dell.com
Status: Confirmed

CVE: CVE-2021-21556 (🔍)
GCVE (CVE): GCVE-0-2021-21556
GCVE (VulDB): GCVE-100-177045

Entryinfo

Created: 06/15/2021 07:10
Updated: 06/18/2021 10:17
Changes: 06/15/2021 07:10 (36), 06/18/2021 10:12 (5), 06/18/2021 10:17 (1)
Complete: 🔍
Cache ID: 216::103