# CVE-2023-4551: Command Injection via Task Scheduler

> Authenticated attackers can inject arbitrary OS commands via the Task Scheduler in OpenText AppBuilder, leading to code execution.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Jan 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-7m9h-xc4x-cg98

## What is CVE-2023-4551?

CVE-2023-4551 is a high-severity command injection vulnerability in OpenText AppBuilder, published on 29 Jan 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Improper Input Validation vulnerability in OpenText AppBuilder on Windows, Linux allows OS Command Injection.

The AppBuilder's Scheduler functionality that facilitates creation of scheduled tasks is vulnerable to command injection. This allows authenticated users to inject arbitrary operating system commands into the executing process.

This issue affects AppBuilder: from 21.2 before 23.2.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2023-4551?

It affects 1 product.


Products: Opentext Appbuilder.

## How do I fix CVE-2023-4551?

No fix has been published for CVE-2023-4551 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4551 being exploited?

There is no known exploitation of CVE-2023-4551 in the wild and no public exploit code.

## Other vulnerabilities in OpenText AppBuilder

- [CVE-2023-4550](https://insights.sbomify.com/CVE-2023-4550/): Unauthenticated Arbitrary File Read (high 7.5)
- [CVE-2023-4552](https://insights.sbomify.com/CVE-2023-4552/): Java Database Connectivity (JDBC) URL Manipulation (medium 5.5)
- [CVE-2023-4553](https://insights.sbomify.com/CVE-2023-4553/): Unauthenticated Access to AppBuilder Configuration Files (medium 5.3)
- [CVE-2023-4554](https://insights.sbomify.com/CVE-2023-4554/): XML External Entity (XXE) Processing (medium 4.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4551 and fix it if it is affected.

What it is: CVE-2023-4551 is a high-severity command injection vulnerability in OpenText AppBuilder, published on 29 Jan 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-4551 in the wild and no public exploit code.

Affected product: OpenText AppBuilder. 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-2023-4551/ (Markdown: https://insights.sbomify.com/CVE-2023-4551/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4551
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4551
- OSV: https://osv.dev/vulnerability/CVE-2023-4551

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4551/
Summaries are generated and may contain mistakes; the official description above is the record.