# CVE-2023-22639: Memory corruption in FortiOS

> An out-of-bounds write in FortiOS and FortiProxy allows attackers to escalate privileges via crafted commands.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Jun 2023
- **Updated:** 23 Oct 2024
- **Also known as:** GHSA-rqg9-f682-xvvh

## What is CVE-2023-22639?

CVE-2023-22639 is a medium-severity memory corruption vulnerability in Fortinet Fortios, published on 13 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A out-of-bounds write in Fortinet FortiOS version 7.2.0 through 7.2.3, FortiOS version 7.0.0 through 7.0.10, FortiOS version 6.4.0 through 6.4.12, FortiOS all versions 6.2, FortiOS all versions 6.0, FortiProxy version 7.2.0 through 7.2.2, FortiProxy version 7.0.0 through 7.0.8, FortiProxy all versions 2.0, FortiProxy all versions 1.2, FortiProxy all versions 1.1, FortiProxy all versions 1.0 allows attacker to escalation of privilege via specifically crafted commands.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2023-22639?

It affects 2 products.


Products: Fortinet Fortios, Fortinet Fortiproxy.

## How do I fix CVE-2023-22639?

No fix has been published for CVE-2023-22639 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-22639 being exploited?

There is no known exploitation of CVE-2023-22639 in the wild and no public exploit code.

## Other vulnerabilities in Fortinet Fortios

- [CVE-2024-23113](https://insights.sbomify.com/CVE-2024-23113/): Fortinet Multiple Products Format String (critical 9.8, exploited in the wild)
- [CVE-2022-40684](https://insights.sbomify.com/CVE-2022-40684/): Fortinet Multiple Products Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2024-55591](https://insights.sbomify.com/CVE-2024-55591/): Fortinet FortiOS and FortiProxy Authentication Bypass (critical 9.6, exploited in the wild)
- [CVE-2024-21762](https://insights.sbomify.com/CVE-2024-21762/): Fortinet FortiOS Out-of-Bound Write (critical 9.6, exploited in the wild)
- [CVE-2022-42475](https://insights.sbomify.com/CVE-2022-42475/): Fortinet FortiOS Heap-Based Buffer Overflow (critical 9.3, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-22639 and fix it if it is affected.

What it is: CVE-2023-22639 is a medium-severity memory corruption vulnerability in Fortinet Fortios, published on 13 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-22639 in the wild and no public exploit code.

Affected product: Fortinet Fortios. 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-2023-22639/ (Markdown: https://insights.sbomify.com/CVE-2023-22639/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-22639
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-22639
- OSV: https://osv.dev/vulnerability/CVE-2023-22639

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-22639/
Summaries are generated and may contain mistakes; the official description above is the record.