GHSA-vjgj-42f6-7997 — medium GitHub Advisory in go/github.com/tinfoil-factory/netfoil

Description

Summary

The optional flag --filter-system-calls was not applied even if specified.

Details

This is a defense in depth feature to apply additional seccomp filters after the binary has started. The example config also sandboxes the binary with systemd.

Impact

Reduced sandboxing of the netfoil binary.

Basic information

Type: reviewed
Severity: medium
Advisory on GitHub: Open advisory ↗
Repository advisory: Open repository advisory ↗
Source code: Browse source ↗
Published (advisory): 2026-04-29 22:23:41 UTC
Updated: 2026-04-29 22:23:42 UTC
GitHub reviewed: 2026-04-29 22:23:41 UTC

CVSS Scores

Base score	Version	Severity	Vector
6.9	4.0	—	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network. Attack complexity (AC:L) Exploitation conditions are straightforward and stable. Attack requirements (AT:N) No additional preconditions are required beyond normal reachability. Privileges required (PR:N) No privileges are required. User interaction (UI:N) No user interaction is required. Vulnerable system confidentiality impact (VC:N) No confidentiality impact on the vulnerable system. Vulnerable system integrity impact (VI:L) Limited integrity impact on the vulnerable system. Vulnerable system availability impact (VA:N) No availability impact on the vulnerable system. Subsequent system confidentiality impact (SC:N) No confidentiality impact on subsequent systems. Subsequent system integrity impact (SI:N) No integrity impact on subsequent systems. Subsequent system availability impact (SA:N) No availability impact on subsequent systems.

Identifiers

Type	Value
GHSA	GHSA-vjgj-42f6-7997 ↗

CWEs

CWE id	Name
CWE-791	Incomplete Filtering of Special Elements

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem	Package	Vulnerable range	First patched	Vulnerable functions
go	github.com/tinfoil-factory/netfoil	< 0.2.1	0.2.1	—

netfoil's optional seccomp sandboxing was not applied