# CVE-2007-1804: Denial of service in n/a

> Remote attackers can crash the PulseAudio daemon via malformed network packets, causing a denial of service.

- **Severity:** High 7.8 (`AV:N/AC:L/Au:N/C:N/I:N/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 2 Apr 2007
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2007-1804, DTSA-44-1, GHSA-m89f-wrgw-mfmg

## What is CVE-2007-1804?

CVE-2007-1804 is a high-severity denial of service vulnerability in n/a, published on 2 Apr 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

PulseAudio 0.9.5 allows remote attackers to cause a denial of service (daemon crash) via (1) a PA_PSTREAM_DESCRIPTOR_LENGTH value of FRAME_SIZE_MAX_ALLOW sent on TCP port 9875, which triggers a p->export assertion failure in do_read; (2) a PA_PSTREAM_DESCRIPTOR_LENGTH value of 0 sent on TCP port 9875, which triggers a length assertion failure in pa_memblock_new; or (3) an empty packet on UDP port 9875, which triggers a t assertion failure in pa_sdp_parse; and allows remote authenticated users to cause a denial of service (daemon crash) via a crafted packet on TCP port 9875 that (4) triggers a maxlength assertion failure in pa_memblockq_new, (5) triggers a size assertion failure in pa_xmalloc, or (6) plays a certain sound file.

## Which versions are affected by CVE-2007-1804?

It affects 1 product.


Products: Pulseaudio Pulseaudio.

## How do I fix CVE-2007-1804?

Upgrade to a fixed version.

## Is CVE-2007-1804 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-1804 exists.

Public exploit code:

- PulseAudio 0.9.5 - 'Assert()' Remote Denial of Service (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2009-1894](https://insights.sbomify.com/CVE-2009-1894/): Race condition in n/a (high 7.2)
- [CVE-2008-0008](https://insights.sbomify.com/CVE-2008-0008/): Privilege escalation in n/a (high 7.2)
- [CVE-2009-1299](https://insights.sbomify.com/CVE-2009-1299/): Path traversal in n/a (medium 6.9)
- [CVE-2024-11586](https://insights.sbomify.com/CVE-2024-11586/): Denial of service in Ubuntu's pulseaudio (medium 4.0)
- [CVE-2014-3970](https://insights.sbomify.com/CVE-2014-3970/): Denial of service in n/a (low 2.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-1804 and fix it if it is affected.

What it is: CVE-2007-1804 is a high-severity denial of service vulnerability in n/a, published on 2 Apr 2007. 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-2007-1804 exists.

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-2007-1804/ (Markdown: https://insights.sbomify.com/CVE-2007-1804/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-1804
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-1804
- OSV: https://osv.dev/vulnerability/CVE-2007-1804

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-1804/
Summaries are generated and may contain mistakes; the official description above is the record.