# CVE-2023-22660: Memory corruption in Ichitaro

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

- **Severity:** High 7.0 (`CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **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 available:** No
- **Published:** 5 Apr 2023
- **Updated:** 10 Feb 2025
- **Also known as:** GHSA-22p7-2347-c784

## 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 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2023-22660?

It affects 1 product.


Products: 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.

## Is CVE-2023-22660 being exploited?

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

## Other vulnerabilities in Ichitaro

- [CVE-2022-43664](https://insights.sbomify.com/CVE-2022-43664/): Use after free in Ichitaro (high 7.8)
- [CVE-2022-45115](https://insights.sbomify.com/CVE-2022-45115/): Memory corruption in Ichitaro (high 7.8)
- [CVE-2023-22291](https://insights.sbomify.com/CVE-2023-22291/): Memory corruption in Ichitaro (high 7.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-22660 and fix it if it is affected.

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

Affected product: Ichitaro. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-22660/ (Markdown: https://insights.sbomify.com/CVE-2023-22660/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-22660
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-22660
- OSV: https://osv.dev/vulnerability/CVE-2023-22660

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-22660/
Summaries are generated and may contain mistakes; the official description above is the record.