# CVE-2017-2791: Memory corruption in Ichitaro

> A memory corruption vulnerability in JustSystems Ichitaro allows remote code execution via a specially crafted PowerPoint file.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/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:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 24 Feb 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-c8jg-8x69-pcr4

## What is CVE-2017-2791?

CVE-2017-2791 is a high-severity memory corruption vulnerability in JustSystems Ichitaro, published on 24 Feb 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

JustSystems Ichitaro 2016 Trial contains a vulnerability that exists when trying to open a specially crafted PowerPoint file. Due to the application incorrectly handling the error case for a function's result, the application will use this result in a pointer calculation for reading file data into. Due to this, the application will read data from the file into an invalid address thus corrupting memory. Under the right conditions, this can lead to code execution under the context of the application.

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

## Which versions are affected by CVE-2017-2791?

It affects 1 product.


Products: Justsystems Ichitaro.

## How do I fix CVE-2017-2791?

No fix has been published for CVE-2017-2791 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-2791 being exploited?

There is no known exploitation of CVE-2017-2791 in the wild and no public exploit code.

## Other vulnerabilities in JustSystems Ichitaro

- [CVE-2014-7247](https://insights.sbomify.com/CVE-2014-7247/): Other in n/a (critical 10.0)
- [CVE-2013-3644](https://insights.sbomify.com/CVE-2013-3644/): Code injection in n/a (critical 10.0)
- [CVE-2013-5990](https://insights.sbomify.com/CVE-2013-5990/): Code injection in n/a (critical 9.3)
- [CVE-2012-0269](https://insights.sbomify.com/CVE-2012-0269/): Memory corruption in n/a (critical 9.3)
- [CVE-2011-1331](https://insights.sbomify.com/CVE-2011-1331/): Memory corruption in n/a (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-2791 and fix it if it is affected.

What it is: CVE-2017-2791 is a high-severity memory corruption vulnerability in JustSystems Ichitaro, published on 24 Feb 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2017-2791 in the wild and no public exploit code.

Affected product: JustSystems 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-2017-2791/ (Markdown: https://insights.sbomify.com/CVE-2017-2791/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-2791
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-2791
- OSV: https://osv.dev/vulnerability/CVE-2017-2791

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-2791/
Summaries are generated and may contain mistakes; the official description above is the record.