NXP MQX Integer Overflow or Wraparound
CVE-2021-22680

7.3HIGH

Key Information:

Vendor

Nxp

Status
MQx
Vendor
CVE Published:
3 May 2022

What is CVE-2021-22680?

NXP MQX Versions 5.1 and prior are vulnerable to integer overflow in mem_alloc, _lwmem_alloc and _partition functions. This unverified memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

Affected Version(s)

MQX <= 5.1

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04
x_refsource_CONFIRM

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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.
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