TI-2020-13230 Aliases CVE-2020-17470 GHSA-p7pr-45q9-5m9w

An issue was discovered in FNET through 4.6.4.

LOW 28CWE-330Published 2020-12-11 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.02098 81st percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:butok:fnet::::::::	up to 4.6.4	Vulnerable	Butok

cpe:2.3:a:butok:fnet:*:*:*:*:*:*:*:* Versions up to 4.6.4 Vulnerable ·Butok

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-17470
2026-10-03 Alias added: GHSA-p7pr-45q9-5m9w

References

Advisory 3

TI-2020-16750 In FNET 4.6.3, TCP ISNs are improperly random. CVSS 3.1CRITICAL 9.1
TI-2020-14924 An issue was discovered in FNET through 4.6.4. CVSS 3.1CRITICAL 9.1
TI-2020-13227 An issue was discovered in FNET through 4.6.4. CVSS 3.1CRITICAL 9.1
TI-2020-13229 An issue was discovered in FNET through 4.6.4. CVSS 3.1HIGH 7.5
TI-2020-13228 An issue was discovered in FNET through 4.6.4. CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences