CVE-2021-32771

Katalog CVE

CVSS 8.1 · High EPSS 1,3%

Kerentanan Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') pada contiki-ng. Skor CVSS 3.1 8.1 (High) menurut NVD.

Deskripsi (NVD)

Contiki-NG is an open-source, cross-platform operating system for IoT devices. In affected versions it is possible to cause a buffer overflow when copying an IPv6 address prefix in the RPL-Classic implementation in Contiki-NG. In order to trigger the vulnerability, the Contiki-NG system must have joined an RPL DODAG. After that, an attacker can send a DAO packet with a Target option that contains a prefix length larger than 128 bits. The problem was fixed after the release of Contiki-NG 4.7. Users unable to upgrade may apply the patch in Contiki-NG PR #1615.

Rincian

Terbit di NVD

4 Agustus 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

8.1 (High), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/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)

1,3% peluang dieksploitasi; lebih tinggi dari 70,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/contiki-ng/contiki-ng/pull/1615 patch · advisory pihak ketiga
• https://github.com/contiki-ng/contiki-ng/pull/1615/commits/587ae59956e00316fd44fd7072ac3a6a07b4b20f patch · advisory pihak ketiga
• https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8 advisory pihak ketiga
• https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-jqjf-v7v9-xp6w advisory pihak ketiga