CVE-2021-22547

In IoT Devices SDK, there is an implementation of calloc() that doesn't have a length check. An attacker could pass in memory objects larger than the buffer and wrap around to have a smaller buffer than required, allowing the attacker access to the other parts of the heap. We recommend upgrading the Google Cloud IoT Device SDK for Embedded C used to 1.0.3 or greater.

CVSS v3 7.8 HIGH
CVSS v2.0 4.6 MEDIUM

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/GoogleCloudPlatform/iot-device-sdk-embedded-c/blob/master/RELEASE-NOTES.md	Release Notes Third Party Advisory
https://github.com/GoogleCloudPlatform/iot-device-sdk-embedded-c/pull/119	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:google:cloud_iot_device_sdk_for_embedded_c:*:*:*:*:*:*:*:*

History

07 May 2021, 22:18

Type	Values Removed	Values Added
References	~~(CONFIRM) https://github.com/GoogleCloudPlatform/iot-device-sdk-embedded-c/blob/master/RELEASE-NOTES.md -~~	(CONFIRM) https://github.com/GoogleCloudPlatform/iot-device-sdk-embedded-c/blob/master/RELEASE-NOTES.md - Release Notes, Third Party Advisory
References	~~(CONFIRM) https://github.com/GoogleCloudPlatform/iot-device-sdk-embedded-c/pull/119 -~~	(CONFIRM) https://github.com/GoogleCloudPlatform/iot-device-sdk-embedded-c/pull/119 - Patch, Third Party Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 4.6 v3 : 7.8
CPE		cpe:2.3:a:google:cloud_iot_device_sdk_for_embedded_c::::::::
CWE		CWE-120

04 May 2021, 13:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-05-04 13:15

Updated : 2023-12-10 13:55

NVD link : CVE-2021-22547

Mitre link : CVE-2021-22547

CVE.ORG link : CVE-2021-22547

JSON object : View

Products Affected

google

cloud_iot_device_sdk_for_embedded_c

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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