# CVE-2018-7890: Command injection in n/a

> Attackers can execute arbitrary commands via the testCredential.do endpoint in ManageEngine Applications Manager by exploiting unvalidated parameters in PowerShell scripts.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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:** Not needed
- **Fix available:** No
- **Published:** 8 Mar 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-f7pp-w97r-w97p

## What is CVE-2018-7890?

CVE-2018-7890 is a critical command injection vulnerability in Zohocorp Manageengine Applications Manager, published on 8 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A remote code execution issue was discovered in Zoho ManageEngine Applications Manager before 13.6 (build 13640). The publicly accessible testCredential.do endpoint takes multiple user inputs and validates supplied credentials by accessing a specified system. This endpoint calls several internal classes, and then executes a PowerShell script. If the specified system is OfficeSharePointServer, then the username and password parameters to this script are not validated, leading to Command Injection.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2018-7890?

It affects 1 product.


Products: Zohocorp Manageengine Applications Manager.

## How do I fix CVE-2018-7890?

No fix has been published for CVE-2018-7890 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-7890 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-7890 exists.

Public exploit code:

- ManageEngine Applications Manager Remote Code Execution (metasploit)
- ManageEngine Applications Manager 13.5 - Remote Code Execution (Metasploit) (exploitdb)

## Other vulnerabilities in Zohocorp Manageengine Applications Manager

- [CVE-2020-24743](https://insights.sbomify.com/CVE-2020-24743/): Privilege escalation in n/a (critical 9.8)
- [CVE-2020-27995](https://insights.sbomify.com/CVE-2020-27995/): SQL injection in n/a (critical 9.8)
- [CVE-2020-15533](https://insights.sbomify.com/CVE-2020-15533/): SQL injection in n/a (critical 9.8)
- [CVE-2020-15394](https://insights.sbomify.com/CVE-2020-15394/): SQL injection in n/a (critical 9.8)
- [CVE-2019-19649](https://insights.sbomify.com/CVE-2019-19649/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-7890 and fix it if it is affected.

What it is: CVE-2018-7890 is a critical command injection vulnerability in Zohocorp Manageengine Applications Manager, published on 8 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-7890 exists.

Affected product: Zohocorp Manageengine Applications Manager. 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-2018-7890/ (Markdown: https://insights.sbomify.com/CVE-2018-7890/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-7890
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-7890
- OSV: https://osv.dev/vulnerability/CVE-2018-7890

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-7890/
Summaries are generated and may contain mistakes; the official description above is the record.