CVE-2020-17439

Katalog CVE

CVSS 8.3 · High EPSS 3,2%

Kerentanan Improper Input Validation pada uip project uip. Skor CVSS 3.1 8.3 (High) menurut NVD.

Deskripsi (NVD)

An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. The code that parses incoming DNS packets does not validate that the incoming DNS replies match outgoing DNS queries in newdata() in resolv.c. Also, arbitrary DNS replies are parsed if there was any outgoing DNS query with a transaction ID that matches the transaction ID of an incoming reply. Provided that the default DNS cache is quite small (only four records) and that the transaction ID has a very limited set of values that is quite easy to guess, this can lead to DNS cache poisoning.

Rincian

Terbit di NVD

11 Desember 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation

EPSS (30 hari)

3,2% peluang dieksploitasi; lebih tinggi dari 87,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 advisory pihak ketiga · pemerintah AS
• https://www.kb.cert.org/vuls/id/815128 advisory pihak ketiga · pemerintah AS