CVE-2023-22660 Memory corruption in Ichitaro

High 7.0 Published 5 Apr 2023 Updated 10 Feb 2025

A heap-based buffer overflow in Ichitaro allows arbitrary code execution when a user opens a malicious document.

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-2023-22660?

CVE-2023-22660 is a high-severity memory corruption vulnerability in Ichitaro, published on 5 Apr 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

A heap-based buffer overflow vulnerability exists in the way Ichitaro version 2022 1.0.1.57600 processes certain LayoutBox stream record types. A specially crafted document can cause a buffer overflow, leading to memory corruption, which can result in arbitrary code execution.To trigger this vulnerability, the victim would need to open a malicious, attacker-created document.

Weakness: CWE-122

Which versions are affected by CVE-2023-22660?

It affects 1 product.

Products include Justsystems Ichitaro 2022.

How do I fix CVE-2023-22660?

No fix has been published for CVE-2023-22660 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-2023-22660 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-22660 exists.

Sources

Also known as GHSA-22p7-2347-c784.