CVE-2020-17470

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CVSS 3.1

5.3 medium

EPSS

2%p81

Published

Dec 11, 2020 (Dec 11, 2020)

Modified

Jun 17, 2026

Description

An issue was discovered in FNET through 4.6.4. The code that initializes the DNS client interface structure does not set sufficiently random transaction IDs (they are always set to 1 in _fnet_dns_poll in fnet_dns.c). This significantly simplifies DNS cache poisoning attacks.

Vendors: butok
Products: fnet
Weakness: CWE-330
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (2.1%)

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