# CVE-2022-31003: Heap-based Buffer Overflow and Out-of-bounds Write in Sofia-SIP

> An out-of-bounds write in Sofia-SIP allows attackers to cause crashes or execute code via malicious SDP messages.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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:** 31 May 2022
- **Updated:** 22 Apr 2025
- **Also known as:** ALPINE-CVE-2022-31003, DEBIAN-CVE-2022-31003, GHSA-8w5j-6g2j-pxcp, UBUNTU-CVE-2022-31003

## What is CVE-2022-31003?

CVE-2022-31003 is a critical memory corruption vulnerability in Debian Debian Linux, published on 31 May 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Sofia-SIP is an open-source Session Initiation Protocol (SIP) User-Agent library. Prior to version 1.13.8, when parsing each line of a sdp message, `rest = record + 2` will access the memory behind `\0` and cause an out-of-bounds write. An attacker can send a message with evil sdp to FreeSWITCH, causing a crash or more serious consequence, such as remote code execution. Version 1.13.8 contains a patch for this issue.

Weakness: CWE-787 (Out-of-bounds Write), CWE-122 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2022-31003?

It affects 2 products.


Products: Debian Debian Linux, Signalwire Sofia-Sip.

## How do I fix CVE-2022-31003?

Upgrade to a fixed version.

## Is CVE-2022-31003 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-31003 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-2022-31003 and fix it if it is affected.

What it is: CVE-2022-31003 is a critical memory corruption vulnerability in Debian Debian Linux, published on 31 May 2022. 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-2022-31003 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-2022-31003/ (Markdown: https://insights.sbomify.com/CVE-2022-31003/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-31003
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-31003
- OSV: https://osv.dev/vulnerability/CVE-2022-31003

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-31003/
Summaries are generated and may contain mistakes; the official description above is the record.