6.7
MEDIUM
CVE-2021-21554
"Dell Optane DC Persistent Memory BIOS Stack Overflow"
Description

Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, and, Dell Precision 7920 Rack Workstation BIOS contain a stack-based buffer overflow vulnerability in systems with Intel Optane DC Persistent Memory installed. A local malicious user with high privileges may potentially exploit this vulnerability, leading to a denial of Service, arbitrary code execution, or information disclosure in UEFI or BIOS Preboot Environment.

INFO

Published Date :

June 14, 2021, 7:15 p.m.

Last Modified :

Oct. 25, 2022, 11:43 p.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

0.8
Affected Products

The following products are affected by CVE-2021-21554 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Dell precision_7920_firmware
2 Dell poweredge_r640_firmware
3 Dell poweredge_r740_firmware
4 Dell poweredge_r740xd_firmware
5 Dell poweredge_r940_firmware
6 Dell poweredge_r840_firmware
7 Dell poweredge_r940xa_firmware
8 Dell poweredge_mx740c_firmware
9 Dell poweredge_mx840c_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-21554.

URL Resource
https://www.dell.com/support/kbdoc/000187958 Patch Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-21554 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-21554 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Oct. 25, 2022

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Jun. 23, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://www.dell.com/support/kbdoc/000187958 No Types Assigned https://www.dell.com/support/kbdoc/000187958 Patch, Vendor Advisory
    Added CWE NIST CWE-787
    Added CPE Configuration AND OR *cpe:2.3:o:dell:poweredge_r640_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.4 OR cpe:2.3:h:dell:poweredge_r640:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:dell:poweredge_r740_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.4 OR cpe:2.3:h:dell:poweredge_r740:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:dell:poweredge_r740xd_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.4 OR cpe:2.3:h:dell:poweredge_r740xd:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:dell:poweredge_r940_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.4 OR cpe:2.3:h:dell:poweredge_r940:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:dell:poweredge_r840_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.4 OR cpe:2.3:h:dell:poweredge_r840:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:dell:poweredge_r940xa_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.4 OR cpe:2.3:h:dell:poweredge_r940xa:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:dell:poweredge_mx740c_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.4 OR cpe:2.3:h:dell:poweredge_mx740c:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:dell:poweredge_mx840c_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.4 OR cpe:2.3:h:dell:poweredge_mx840c:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:dell:precision_7920_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:dell:precision_7920:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-21554 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-21554 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.10264

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability