TI-2023-09460 Aliases CVE-2023-23631 GHSA-4gj3-6r43-3wfc

HAMT Decoding Panics in github.com/ipfs/go-unixfsnode

LOW 35CWE-400Published 2023-02-09 · Updated 2025-03-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-400.

Summary

github.com/ipfs/go-unixfsnode is an ADL IPLD prime node that wraps go-codec-dagpb's implementation of protobuf to enable pathing. In versions priot to 1.5.2 trying to read malformed HAMT sharded directories can cause panics and virtual memory leaks. If you are reading untrusted user input, an attacker can then trigger a panic. This is caused by bogus fanout parameter in the HAMT directory nodes. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00908 60th percentileScored 2026-11-07

Fix Fixed go-unixfsnode (ipfs): 1.5.2github.com/ipfs/go-unixfsnode (Go): 1.5.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
ipfs	go-unixfsnode	before 1.5.2	1.5.2	Patch available	CNA
—	github.com/ipfs/go-unixfsnode (Go)	before 1.5.2	1.5.2	Patch available	GHSA-4gj3-6r43-3wfc

go-unixfsnode Vendoripfs Affected before 1.5.2 Fixed in 1.5.2 Patch available CNA
github.com/ipfs/go-unixfsnode (Go) Vendor— Affected before 1.5.2 Fixed in 1.5.2 Patch available GHSA-4gj3-6r43-3wfc

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:protocol:go-unixfsnode::::::go::*	before 1.5.2	Vulnerable	Protocol

cpe:2.3:a:protocol:go-unixfsnode:*:*:*:*:*:go:*:* Versions before 1.5.2 Vulnerable ·Protocol

Remediation

Fix · CNA go-unixfsnode (ipfs) Fixed in 1.5.2
Fix · GHSA-4gj3-6r43-3wfc github.com/ipfs/go-unixfsnode (Go) Fixed in 1.5.2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2023-23631
2026-10-03 Alias added: GHSA-4gj3-6r43-3wfc

References

Patch 4

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2023-23631

Other 2

TI-2023-09455 Denial of service when feeding malformed size arguments in go-bitfield CVSS 3.1HIGH 7.5
TI-2023-10871 Boxo bitswap/server: DOS unbounded persistent memory leak CVSS 3.1HIGH 8.2
TI-2020-08933 Exposure of Sensitive Information to an Unauthorized Actor in AEgir CVSS 3.1CRITICAL 9.6
TI-2022-07554 ProtoNode may be modified such that common method calls may panic in ipfs/go-merkledag CVSS 3.1HIGH 7.5
TI-2020-16104 Control character injection in console output CVSS 3.1HIGH 8.8
TI-2020-16100 Path traversal in ipfs go-ipfs CVSS 3.1HIGH 8.1

See all 8 →

Sources

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