CVE-2021-22547

Katalog CVE

CVSS 7.8 · High EPSS 0,22%

Kerentanan Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') pada google cloud iot device sdk for embedded c. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

4 Mei 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.8 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

EPSS (30 hari)

0,22% peluang dieksploitasi; lebih tinggi dari 11,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/GoogleCloudPlatform/iot-device-sdk-embedded-c/pull/119 patch · advisory pihak ketiga
• https://github.com/GoogleCloudPlatform/iot-device-sdk-embedded-c/blob/master/RELEASE-NOTES.md release notes · advisory pihak ketiga