# CVE-2022-37325: Memory corruption in n/a

> A malformed H.323 message can cause a crash in Asterisk, leading to denial of service for the PBX system.

- **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:** 5 Dec 2022
- **Updated:** 2 Jul 2026
- **Also known as:** ALPINE-CVE-2022-37325, DEBIAN-CVE-2022-37325, GHSA-m52q-h2w3-62w3, UBUNTU-CVE-2022-37325

## What is CVE-2022-37325?

CVE-2022-37325 is a high-severity memory corruption vulnerability in n/a, published on 5 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In Sangoma Asterisk through 16.28.0, 17.x and 18.x through 18.14.0, and 19.x through 19.6.0, an incoming Setup message to addons/ooh323c/src/ooq931.c with a malformed Calling or Called Party IE can cause a crash.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2022-37325?

It affects 1 product.


Products: Sangoma Asterisk.

## How do I fix CVE-2022-37325?

Upgrade to a fixed version.

## Is CVE-2022-37325 being exploited?

There is no known exploitation of CVE-2022-37325 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2024-57520](https://insights.sbomify.com/CVE-2024-57520/): Path traversal in n/a (critical 9.8)
- [CVE-2025-47779](https://insights.sbomify.com/CVE-2025-47779/): Using malformed From header can forge identity with ";" or NULL in name portion (high 7.7)
- [CVE-2025-57767](https://insights.sbomify.com/CVE-2025-57767/): Asterisk can crash from a specifically malformed Authorization header in an incoming SIP request (high 7.5)
- [CVE-2025-1131](https://insights.sbomify.com/CVE-2025-1131/): Asterisk Unsafe Shell Sourcing in safe_asterisk Leads to Local Privilege Escalation (high 7.0)
- [CVE-2025-54995](https://insights.sbomify.com/CVE-2025-54995/): Asterisk remotely exploitable leak of RTP UDP ports and internal resources (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-37325 and fix it if it is affected.

What it is: CVE-2022-37325 is a high-severity memory corruption vulnerability in n/a, published on 5 Dec 2022. 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-2022-37325 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-2022-37325/ (Markdown: https://insights.sbomify.com/CVE-2022-37325/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-37325
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-37325
- OSV: https://osv.dev/vulnerability/CVE-2022-37325

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-37325/
Summaries are generated and may contain mistakes; the official description above is the record.