CVE Vulnerability

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.

4.6 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

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

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

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

Published : 2021-05-04 01:15

Updated : 2021-05-07 10:18

NVD link : CVE-2021-22547

Mitre link : CVE-2021-22547

Products Affected
No products.
CWE
CWE-120