# CVE-2017-10870: Memory corruption in Rakuraku Hagaki

> Attackers can execute arbitrary code by tricking users into opening specially crafted files in Rakuraku Hagaki or Ichitaro word processors.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/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:** 2 Nov 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-7gr8-7r65-qmx7

## What is CVE-2017-10870?

CVE-2017-10870 is a high-severity memory corruption vulnerability in Justsystem Rakuraku Hagaki, published on 2 Nov 2017. 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

Memory corruption vulnerability in Rakuraku Hagaki (Rakuraku Hagaki 2018, Rakuraku Hagaki 2017, Rakuraku Hagaki 2016) and Rakuraku Hagaki Select for Ichitaro (Ichitaro 2017, Ichitaro 2016, Ichitaro 2015, Ichitaro Pro3, Ichitaro Pro2, Ichitaro Pro, Ichitaro 2011, Ichitaro Government 8, Ichitaro Government 7, Ichitaro Government 6 and Ichitaro 2017 Trial version) allows attackers to execute arbitrary code with privileges of the application via specially crafted file.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2017-10870?

It affects 14 products.


Products: Justsystems Easy Postcard 2016, Justsystems Easy Postcard 2017, Justsystems Easy Postcard 2018, Justsystems Ichitaro 2016, Justsystems Ichitaro 2017, Justsystems Ichitaro 2017 Trial Version, Justsystems Ichitaro 2018, Justsystems Ichitaro Government 6, Justsystems Ichitaro Government 7, Justsystems Ichitaro Government 8, Justsystems Ichitaro Pro, Justsystems Ichitaro Pro 2, Justsystems Ichitaro Pro 2011, Justsystems Ichitaro Pro 3.

## How do I fix CVE-2017-10870?

No fix has been published for CVE-2017-10870 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-10870 being exploited?

There is no known exploitation of CVE-2017-10870 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-10870 and fix it if it is affected.

What it is: CVE-2017-10870 is a high-severity memory corruption vulnerability in Justsystem Rakuraku Hagaki, published on 2 Nov 2017. 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: There is no known exploitation of CVE-2017-10870 in the wild and no public exploit code.

Affected product: Justsystem Rakuraku Hagaki. 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-2017-10870/ (Markdown: https://insights.sbomify.com/CVE-2017-10870/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-10870
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-10870
- OSV: https://osv.dev/vulnerability/CVE-2017-10870

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-10870/
Summaries are generated and may contain mistakes; the official description above is the record.