TI-2023-15081 Aliases CVE-2023-31470 GHSA-x59p-gvr8-w8pq

SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based…

HIGH 82CWE-787Published 2023-04-28 · Updated 2025-01-31

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

SmartDNS through 41 before 56d0332 allows an out-of-bounds write because of a stack-based buffer overflow in the _dns_encode_domain function in the dns.c file, via a crafted DNS request.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01117 66th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

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
—	—	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:pymumu:smartdns::::::::	up to 41	Vulnerable	pymumu

cpe:2.3:a:pymumu:smartdns:*:*:*:*:*:*:*:* Versions up to 41 Vulnerable ·pymumu

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-31470
2026-10-03 Alias added: GHSA-x59p-gvr8-w8pq

References

Exploit 1

https://github.com/pymumu/smartdns/issues/1378

Patch 1

https://github.com/pymumu/smartdns/commit/56d0332bf91104cfc877635f6c82e9348587df04

TI-2024-16038 smartdns commit 54b4dc was discovered to contain a misaligned address at smartdns/src/dns.c. CVSS 3.1HIGH 7.5
TI-2024-16037 smartdns commit 54b4dc was discovered to contain a misaligned address at smartdns/src/util.c. CVSS 3.1HIGH 7.5

Sources

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