# CVE-2018-19802: Aubio is vulnerable to a NULL pointer dereference in new_aubio_notes function

> A NULL pointer dereference in aubio's onset detection allows attackers to cause a denial of service via crafted audio input.

- **Severity:** High 7.5 (`CVSS:3.0/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:** 7 Jun 2019
- **Updated:** 5 Aug 2024
- **Also known as:** CVE-2019-1010224, DEBIAN-CVE-2018-19802, GHSA-c6jq-h4jp-72pr, PYSEC-2019-164, UBUNTU-CVE-2018-19802

## What is CVE-2018-19802?

CVE-2018-19802 is a high-severity vulnerability in n/a, published on 7 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

aubio v0.4.0 to v0.4.8 has a new_aubio_onset NULL pointer dereference.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2018-19802?

3 open source packages ship an affected version, including aubio. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `aubio` | PyPI | From 0.4.0 | 0.4.9 |
| `aubio` | PyPI | From 0.4.0 | 0.4.9 |
| `aubio` | PyPI | From 0.4.0 | 0.4.9 |

Products: Aubio Aubio.

## How do I fix CVE-2018-19802?

Upgrade aubio to 0.4.9 or later.

## Is CVE-2018-19802 being exploited?

There is no known exploitation of CVE-2018-19802 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2018-19800](https://insights.sbomify.com/CVE-2018-19800/): aubio Buffer Overflow vulnerability (critical 9.8)
- [CVE-2018-14521](https://insights.sbomify.com/CVE-2018-14521/): Aubio is vulnerable to denial of service via aubio_source_avcodec_readframe function (high 8.8)
- [CVE-2018-14522](https://insights.sbomify.com/CVE-2018-14522/): Aubio is vulnerable to denial of service via aubio_pitch_set_unit function (high 8.8)
- [CVE-2018-14523](https://insights.sbomify.com/CVE-2018-14523/): Aubio is vulnerable to out of bound read when samplerate > 50kHz (high 8.8)
- [CVE-2018-19801](https://insights.sbomify.com/CVE-2018-19801/): Aubio is vulnerable to a NULL pointer dereference in new_aubio_filterbank (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-19802 and fix it if it is affected.

What it is: CVE-2018-19802 is a high-severity vulnerability in n/a, published on 7 Jun 2019. 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-2018-19802 in the wild and no public exploit code.

Affected packages and fixed versions:
- aubio (PyPI): affected from 0.4.0; fixed in 0.4.9
- aubio (PyPI): affected from 0.4.0; fixed in 0.4.9
- aubio (PyPI): affected from 0.4.0; fixed in 0.4.9

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-2018-19802/ (Markdown: https://insights.sbomify.com/CVE-2018-19802/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-19802
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-19802
- OSV: https://osv.dev/vulnerability/CVE-2018-19802

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-19802/
Summaries are generated and may contain mistakes; the official description above is the record.