// For flags

CVE-2021-27421

NXP MCUXpresso SDK Integer Overflow or Wraparound

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

NXP MCUXpresso SDK versions prior to 2.8.2 are vulnerable to integer overflow in SDK_Malloc function, which could allow to access memory locations outside the bounds of a specified array, leading to unexpected behavior such segmentation fault when assigning a particular block of memory from the heap via malloc.

NXP MCUXpresso SDK versiones anteriores a 2.8.2, son vulnerables a un desbordamiento de enteros en la función SDK_Malloc, que podría permitir el acceso a ubicaciones de memoria fuera de los límites de una matriz especificada, conllevando a un comportamiento no esperado, como un fallo de segmentación, cuando es asignado un bloque concreto de memoria de la pila por medio de malloc

*Credits: David Atch, Omri Ben Bassat, and Tamir Ariel from Microsoft Section 52, and the Azure Defender for IoT research group reported these vulnerabilities to CISA.
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-02-19 CVE Reserved
  • 2022-05-03 CVE Published
  • 2023-11-24 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-190: Integer Overflow or Wraparound
CAPEC
References (2)
URL Tag Source
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 Third Party Advisory
URL Date SRC
URL Date SRC
URL Date SRC
https://mcuxpresso.nxp.com/en/welcome 2022-05-12
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Nxp
Search vendor "Nxp"
 Mcuxpresso Software Development Kit
Search vendor "Nxp" for product "Mcuxpresso Software Development Kit"
 < 2.8.2
Search vendor "Nxp" for product "Mcuxpresso Software Development Kit" and version " < 2.8.2"
-
Affected