# CVE-2013-4399: Use after free in n/a

> Remote attackers can cause a denial of service via use-after-free in libvirt when ACLs are enabled, requiring an upgrade to fix.

- **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:N/I:N/A:P`)
- **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:** 12 Dec 2014
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2013-4399, GHSA-hr87-j88c-crv5

## What is CVE-2013-4399?

CVE-2013-4399 is a medium-severity use after free vulnerability in Redhat Libvirt, published on 12 Dec 2014. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The remoteClientFreeFunc function in daemon/remote.c in libvirt before 1.1.3, when ACLs are used, does not set an identity, which causes event handler removal to be denied and remote attackers to cause a denial of service (use-after-free and crash) by registering an event handler and then closing the connection.

## Which versions are affected by CVE-2013-4399?

It affects 1 product.


Products: Redhat Libvirt.

## How do I fix CVE-2013-4399?

Upgrade to a fixed version.

## Is CVE-2013-4399 being exploited?

There is no known exploitation of CVE-2013-4399 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Libvirt

- [CVE-2013-4401](https://insights.sbomify.com/CVE-2013-4401/): Missing authorization in n/a (high 8.5)
- [CVE-2017-2635](https://insights.sbomify.com/CVE-2017-2635/): Null dereference in libvirt (high 7.7)
- [CVE-2013-4400](https://insights.sbomify.com/CVE-2013-4400/): Privilege escalation in n/a (high 7.2)
- [CVE-2013-4291](https://insights.sbomify.com/CVE-2013-4291/): Privilege escalation in n/a (medium 6.9)
- [CVE-2011-1146](https://insights.sbomify.com/CVE-2011-1146/): Missing authorization in n/a (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-4399 and fix it if it is affected.

What it is: CVE-2013-4399 is a medium-severity use after free vulnerability in Redhat Libvirt, published on 12 Dec 2014. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2013-4399 in the wild and no public exploit code.

Affected product: Redhat Libvirt. 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-2013-4399/ (Markdown: https://insights.sbomify.com/CVE-2013-4399/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-4399
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-4399
- OSV: https://osv.dev/vulnerability/CVE-2013-4399

---
From sbomify Insights: https://insights.sbomify.com/CVE-2013-4399/
Summaries are generated and may contain mistakes; the official description above is the record.