# CVE-2019-12929: Command injection in n/a

> Attackers with QMP access can execute OS commands via guest_exec, though this requires exposing the trusted management interface.

- **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:** 24 Jun 2019
- **Updated:** 4 Aug 2024
- **Also known as:** DEBIAN-CVE-2019-12929, GHSA-mmfj-9vc2-fw9p, UBUNTU-CVE-2019-12929

## What is CVE-2019-12929?

CVE-2019-12929 is a critical command injection vulnerability in Qemu Qemu, published on 24 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The QMP guest_exec command in QEMU 4.0.0 and earlier is prone to OS command injection, which allows the attacker to achieve code execution, denial of service, or information disclosure by sending a crafted QMP command to the listening server. Note: This has been disputed as a non-issue since QEMU's -qmp interface is meant to be used by trusted users. If one is able to access this interface via a tcp socket open to the internet, then it is an insecure configuration issue

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-668 (Exposure of Resource to Wrong Sphere)

## Which versions are affected by CVE-2019-12929?

It affects 1 product.


Products: Qemu Qemu.

## How do I fix CVE-2019-12929?

No fix has been published for CVE-2019-12929 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-12929 being exploited?

There is no known exploitation of CVE-2019-12929 in the wild and no public exploit code.

## Other vulnerabilities in Qemu Qemu

- [CVE-2022-36648](https://insights.sbomify.com/CVE-2022-36648/): Null dereference in n/a (critical 10.0)
- [CVE-2015-8556](https://insights.sbomify.com/CVE-2015-8556/): Race condition in n/a (critical 10.0)
- [CVE-2009-3616](https://insights.sbomify.com/CVE-2009-3616/): Use after free in n/a (critical 9.9)
- [CVE-2019-12928](https://insights.sbomify.com/CVE-2019-12928/): Command injection in n/a (critical 9.8)
- [CVE-2018-20815](https://insights.sbomify.com/CVE-2018-20815/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-12929 and fix it if it is affected.

What it is: CVE-2019-12929 is a critical command injection vulnerability in Qemu Qemu, published on 24 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-12929 in the wild and no public exploit code.

Affected product: Qemu Qemu. 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-2019-12929/ (Markdown: https://insights.sbomify.com/CVE-2019-12929/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-12929
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-12929
- OSV: https://osv.dev/vulnerability/CVE-2019-12929

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-12929/
Summaries are generated and may contain mistakes; the official description above is the record.