TI-2020-13227 Aliases CVE-2020-17467 GHSA-wvw6-x7x2-94g8

An issue was discovered in FNET through 4.6.4.

MEDIUM 45CWE-125Published 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: High · None · High
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 for processing the hostname from an LLMNR request doesn't check for '\0' termination. Therefore, the deduced length of the hostname doesn't reflect the correct length of the actual data. This may lead to Information Disclosure in _fnet_llmnr_poll in fnet_llmnr.c during a response to a malicious request of the DNS class IN.

Why it matters now

EPSS 0.03076 87th 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-2020-17467
2026-10-03 Alias added: GHSA-wvw6-x7x2-94g8

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-2020-13229 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
TI-2020-13230 An issue was discovered in FNET through 4.6.4. CVSS 3.1MEDIUM 5.3

Sources

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