CVE Published: 04/05/2021 |
CVE Updated: 03/08/2024 |
CVE Year: 2021 Source: Google |
Vendor: Google LLC |
Product: Google Cloud IoT Device SDK for Embedded C Status : PUBLISHED
CVE-2021-22547 Description
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.
Metrics
CVSS Version: 3.1 |
Base Score: 6.3 MEDIUM Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
l➤ Exploitability Metrics: Attack Vector (AV)* LOCAL Attack Complexity (AC)* HIGH Privileges Required (PR)* LOW User Interaction (UI)* NONE Scope (S)* UNCHANGED
l➤ Impact Metrics: Confidentiality Impact (C)* HIGH Integrity Impact (I)* HIGH Availability Impact (A)* NONE
Weakness Enumeration (CWE)
CWE-ID: CWE-120 CWE Name: CWE-120 Buffer Overflow Source: Google LLC
Common Attack Pattern Enumeration and Classification (CAPEC)