# CVE-2009-0545: Command injection in n/a

> Remote attackers can execute arbitrary commands on ZeroShell via shell metacharacters in the type parameter of the kerbynet CGI script.

- **Severity:** Critical 10.0 (`AV:N/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Feb 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-9p53-hww6-pm2p

## What is CVE-2009-0545?

CVE-2009-0545 is a critical command injection vulnerability in n/a, published on 12 Feb 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

cgi-bin/kerbynet in ZeroShell 1.0beta11 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in the type parameter in a NoAuthREQ x509List action.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2009-0545?

It affects 1 product.


Products: Zeroshell Zeroshell.

## How do I fix CVE-2009-0545?

No fix has been published for CVE-2009-0545 yet. Limit exposure of the affected software until one is available.

## Is CVE-2009-0545 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-0545 exists.

Public exploit code:

- ZeroShell 1.0beta11 - Remote Code Execution (exploitdb)
- ZeroShell Remote Code Execution (metasploit)
- ZeroShell <= 1.0beta11 Remote Code Execution (nuclei): http/cves/2009/CVE-2009-0545.yaml

## Other vulnerabilities in n/a

- [CVE-2020-29390](https://insights.sbomify.com/CVE-2020-29390/): Command injection in n/a (critical 9.8)
- [CVE-2019-12725](https://insights.sbomify.com/CVE-2019-12725/): Command injection in n/a (critical 9.8)
- [CVE-2021-41738](https://insights.sbomify.com/CVE-2021-41738/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-0545 and fix it if it is affected.

What it is: CVE-2009-0545 is a critical command injection vulnerability in n/a, published on 12 Feb 2009. 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-2009-0545 exists.

Affected product: n/a. 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-2009-0545/ (Markdown: https://insights.sbomify.com/CVE-2009-0545/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-0545
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-0545
- OSV: https://osv.dev/vulnerability/CVE-2009-0545

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-0545/
Summaries are generated and may contain mistakes; the official description above is the record.