# CVE-2024-25583: Crafted responses can lead to a denial of service in Recursor if recursive forwarding is configured

> Attackers can cause denial of service in PowerDNS Recursor via crafted upstream responses when recursive forwarding is enabled.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 25 Apr 2024
- **Updated:** 13 Feb 2025
- **Also known as:** DEBIAN-CVE-2024-25583, DSA-5674-1, GHSA-rx5p-gx7r-2xj5, UBUNTU-CVE-2024-25583, openSUSE-SU-2024:0114-1, openSUSE-SU-2024:13901-1

## What is CVE-2024-25583?

CVE-2024-25583 is a high-severity denial of service vulnerability in PowerDNS Recursor, published on 25 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A crafted response from an upstream server the recursor has been configured to forward-recurse to can cause a Denial of Service in the Recursor. The default configuration of the Recursor does not use recursive forwarding and is not affected.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2024-25583?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `pdns-recursor` | SUSE:Package Hub 15 SP5 | All versions | 4.8.8-bp155.2.6.1 |
| `pdns-recursor` | openSUSE:Leap 15.5 | All versions | 4.8.8-bp155.2.6.1 |
| `pdns-recursor` | openSUSE:Tumbleweed | All versions | 5.0.4-1.1 |

## How do I fix CVE-2024-25583?

Apply the vendor's patch.

## Is CVE-2024-25583 being exploited?

There is no known exploitation of CVE-2024-25583 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-25583 and fix it if it is affected.

What it is: CVE-2024-25583 is a high-severity denial of service vulnerability in PowerDNS Recursor, published on 25 Apr 2024. 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-2024-25583 in the wild and no public exploit code.

Affected product: PowerDNS Recursor. 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-2024-25583/ (Markdown: https://insights.sbomify.com/CVE-2024-25583/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-25583
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-25583
- OSV: https://osv.dev/vulnerability/CVE-2024-25583

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-25583/
Summaries are generated and may contain mistakes; the official description above is the record.