# CVE-2019-13590: Null dereference in n/a

> A NULL pointer dereference in the SoX library allows attackers to cause a denial of service via crafted audio files.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 14 Jul 2019
- **Updated:** 4 Aug 2024
- **Also known as:** AZL-43633, AZL-44592, CVE-2019-15851, DEBIAN-CVE-2019-13590, GHSA-x9xw-c3gx-4f2m, UBUNTU-CVE-2019-13590

## What is CVE-2019-13590?

CVE-2019-13590 is a medium-severity vulnerability in n/a, published on 14 Jul 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

An issue was discovered in libsox.a in SoX 14.4.2. In sox-fmt.h (startread function), there is an integer overflow on the result of integer addition (wraparound to 0) fed into the lsx_calloc macro that wraps malloc. When a NULL pointer is returned, it is used without a prior check that it is a valid pointer, leading to a NULL pointer dereference on lsx_readbuf in formats_i.c.

Weakness: CWE-476 (NULL Pointer Dereference), CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2019-13590?

It affects 1 product.


Products: Sound Exchange Project Sound Exchange.

## How do I fix CVE-2019-13590?

Apply the vendor's patch.

## Is CVE-2019-13590 being exploited?

There is no known exploitation of CVE-2019-13590 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-40426](https://insights.sbomify.com/CVE-2021-40426/): Memory corruption in libsox (critical 10.0)
- [CVE-2021-3643](https://insights.sbomify.com/CVE-2021-3643/): Information disclosure in sox (critical 9.1)
- [CVE-2021-23159](https://insights.sbomify.com/CVE-2021-23159/): Memory corruption in SoX (Sound eXchange) (medium 5.5)
- [CVE-2021-23172](https://insights.sbomify.com/CVE-2021-23172/): Memory corruption in SoX (Sound eXchange) (medium 5.5)
- [CVE-2021-23210](https://insights.sbomify.com/CVE-2021-23210/): Denial of service in SoX (Sound eXchange) (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-13590 and fix it if it is affected.

What it is: CVE-2019-13590 is a medium-severity vulnerability in n/a, published on 14 Jul 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-13590 in the wild and no public exploit code.

Affected product: n/a. 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-2019-13590/ (Markdown: https://insights.sbomify.com/CVE-2019-13590/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-13590
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-13590
- OSV: https://osv.dev/vulnerability/CVE-2019-13590

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-13590/
Summaries are generated and may contain mistakes; the official description above is the record.