CVE-2023-38128 Memory corruption in Ichitaro 2023

High 7.8 Published 19 Oct 2023 Updated 13 Feb 2025

A malicious document can trigger memory corruption in Ichitaro 2023, allowing attackers to execute arbitrary code.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-38128?

CVE-2023-38128 is a high-severity memory corruption vulnerability in Ichitaro 2023, published on 19 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

An out-of-bounds write vulnerability exists in the "HyperLinkFrame" stream parser of Ichitaro 2023 1.0.1.59372. A specially crafted document can cause a type confusion, which can lead to memory corruption and eventually arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

Weakness: CWE-787, CWE-843

Which versions are affected by CVE-2023-38128?

It affects 19 products.

Products include Justsystems Easy Postcard Max, Justsystems Ichitaro 2021, Justsystems Ichitaro 2022, Justsystems Ichitaro 2023, Justsystems Ichitaro Government 10, Justsystems Ichitaro Government 8 and 13 more.

How do I fix CVE-2023-38128?

No fix has been published for CVE-2023-38128 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-2023-38128 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-38128 exists.

Sources

Also known as GHSA-f464-84q7-49hm.