CVE-2023-31470 Memory corruption in n/a

Critical 9.8 Published 28 Apr 2023 Updated 31 Jan 2025

A stack-based buffer overflow in SmartDNS allows remote attackers to execute arbitrary code or cause denial of service via crafted DNS requests.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-31470?

CVE-2023-31470 is a critical memory corruption vulnerability in n/a, published on 28 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-787

Which versions are affected by CVE-2023-31470?

It affects 1 product.

Products include Pymumu Smartdns.

How do I fix CVE-2023-31470?

No fix has been published for CVE-2023-31470 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-31470 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-31470 exists.

Sources

Also known as GHSA-x59p-gvr8-w8pq.