# CVE-2017-13673: Denial of service in n/a

> A flaw in QEMU's VGA emulation allows a guest to cause a denial of service via an assertion failure when split screen mode is active.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 29 Aug 2017
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2017-13673, GHSA-pg5w-wp8p-gv59

## What is CVE-2017-13673?

CVE-2017-13673 is a medium-severity denial of service vulnerability in Qemu Qemu, published on 29 Aug 2017. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The vga display update in mis-calculated the region for the dirty bitmap snapshot in case split screen mode is used causing a denial of service (assertion failure) in the cpu_physical_memory_snapshot_get_dirty function.

Weakness: CWE-617 (Reachable Assertion)

## Which versions are affected by CVE-2017-13673?

It affects 1 product.


Products: Qemu Qemu.

## How do I fix CVE-2017-13673?

Apply the vendor's patch.

## Is CVE-2017-13673 being exploited?

There is no known exploitation of CVE-2017-13673 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-2019-12929](https://insights.sbomify.com/CVE-2019-12929/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-13673 and fix it if it is affected.

What it is: CVE-2017-13673 is a medium-severity denial of service vulnerability in Qemu Qemu, published on 29 Aug 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-13673 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-2017-13673/ (Markdown: https://insights.sbomify.com/CVE-2017-13673/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-13673
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-13673
- OSV: https://osv.dev/vulnerability/CVE-2017-13673

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-13673/
Summaries are generated and may contain mistakes; the official description above is the record.