Vulnerability · Published May 4, 2021 · Assigned by Google
CVE-2021-22547Buffer overrun in Google Cloud IoT Device SDK for Embedded C
Medium 6.3
In plain English
A medium-severity buffer overflow in Google Cloud IoT Device SDK for Embedded C from Google LLC. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Google LLC | Google Cloud IoT Device SDK for Embedded C | unspecified – through 1.0.2 |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N