# CVE-2015-5694: Designate does not enforce the DNS protocol limit concerning record set sizes

> Attackers can cause denial of service in OpenStack Designate by sending DNS record sets that exceed protocol size limits.

- **Severity:** Medium 6.5 (`CVSS:3.1/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:** 22 Nov 2019
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2015-5694, GHSA-c33m-22cr-j9x4, PYSEC-2019-243

## What is CVE-2015-5694?

CVE-2015-5694 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 22 Nov 2019. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Designate does not enforce the DNS protocol limit concerning record set sizes

Weakness: CWE-835 (Loop with Unreachable Exit Condition)

## Which versions are affected by CVE-2015-5694?

3 open source packages ship an affected version, including designate. It affects 3 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `designate` | PyPI | All versions | None |
| `designate` | PyPI | All versions | None |
| `designate` | PyPI | All versions | None |

Products: Debian Debian Linux, Openstack Designate, Redhat Enterprise Linux Openstack Platform.

## How do I fix CVE-2015-5694?

Apply the vendor's patch.

## Is CVE-2015-5694 being exploited?

There is no known exploitation of CVE-2015-5694 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-5694 and fix it if it is affected.

What it is: CVE-2015-5694 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 22 Nov 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2015-5694 in the wild and no public exploit code.

Affected packages and fixed versions:
- designate (PyPI): affected all versions; no fix listed
- designate (PyPI): affected all versions; no fix listed
- designate (PyPI): affected all versions; no fix listed

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-2015-5694/ (Markdown: https://insights.sbomify.com/CVE-2015-5694/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-5694
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-5694
- OSV: https://osv.dev/vulnerability/CVE-2015-5694

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-5694/
Summaries are generated and may contain mistakes; the official description above is the record.