# CVE-2024-0567: Gnutls: rejects certificate chain with distributed trust

> An unauthenticated remote attacker can cause a denial of service in applications using GnuTLS by submitting a certificate chain with distributed trust.

- **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:** 16 Jan 2024
- **Updated:** 15 Oct 2026
- **Also known as:** ALPINE-CVE-2024-0567, AZL-33340, AZL-34740, BELL-CVE-2024-0567, CLSA-2024-1708029936, CLSA-2025-1744390816, DEBIAN-CVE-2024-0567, GHSA-mcx8-9rrj-7qxm, JLSEC-2026-526, UBUNTU-CVE-2024-0567

## What is CVE-2024-0567?

CVE-2024-0567 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 16 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was found in GnuTLS, where a cockpit (which uses gnuTLS) rejects a certificate chain with distributed trust. This issue occurs when validating a certificate chain with cockpit-certificate-ensure. This flaw allows an unauthenticated, remote client or attacker to initiate a denial of service attack.

Weakness: CWE-347 (Improper Verification of Cryptographic Signature)

## Which versions are affected by CVE-2024-0567?

It affects 4 products.


Products: Debian Debian Linux, Fedoraproject Fedora, Gnu Gnutls, Netapp Active Iq Unified Manager.

## How do I fix CVE-2024-0567?

Upgrade to a fixed version.

## Is CVE-2024-0567 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-0567 exists.

## 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-2024-0567 and fix it if it is affected.

What it is: CVE-2024-0567 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 16 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-0567 exists.

Affected product: Debian Debian Linux. 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-2024-0567/ (Markdown: https://insights.sbomify.com/CVE-2024-0567/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-0567
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-0567
- OSV: https://osv.dev/vulnerability/CVE-2024-0567

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-0567/
Summaries are generated and may contain mistakes; the official description above is the record.