# CVE-2024-6303: Missing Authorization in Conduit

> Attackers can manipulate room aliases to escalate privileges and perform administrative actions on the Conduit Matrix homeserver.

- **Severity:** Critical 9.9 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Jun 2024
- **Updated:** 29 Aug 2024
- **Also known as:** GHSA-rjmw-frq7-qf5g

## What is CVE-2024-6303?

CVE-2024-6303 is a critical missing authorization vulnerability in The Conduit Contributors Conduit, published on 25 Jun 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Missing authorization in Client-Server API in Conduit <=0.7.0, allowing for any alias to be removed and added to another room, which can be used for privilege escalation by moving the #admins alias to a room which they control, allowing them to run commands resetting passwords, siging json with the server's key, deactivating users, and more

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2024-6303?

It affects 1 product.


Products: Conduit Conduit.

## How do I fix CVE-2024-6303?

No fix has been published for CVE-2024-6303 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-6303 being exploited?

There is no known exploitation of CVE-2024-6303 in the wild and no public exploit code.

## Other vulnerabilities in The Conduit Contributors Conduit

- [CVE-2024-6302](https://insights.sbomify.com/CVE-2024-6302/): Improper Handling of Insufficient Permissions or Privileges in Conduit (high 8.1)
- [CVE-2024-6301](https://insights.sbomify.com/CVE-2024-6301/): Origin Validation Error in Conduit (medium 5.3)
- [CVE-2024-6299](https://insights.sbomify.com/CVE-2024-6299/): Use of a Key Past its Expiration Date in Conduit (medium 4.8)
- [CVE-2024-6300](https://insights.sbomify.com/CVE-2024-6300/): Incomplete Cleanup in Conduit (low 3.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-6303 and fix it if it is affected.

What it is: CVE-2024-6303 is a critical missing authorization vulnerability in The Conduit Contributors Conduit, published on 25 Jun 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-6303 in the wild and no public exploit code.

Affected product: The Conduit Contributors Conduit. 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-2024-6303/ (Markdown: https://insights.sbomify.com/CVE-2024-6303/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-6303
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-6303
- OSV: https://osv.dev/vulnerability/CVE-2024-6303

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-6303/
Summaries are generated and may contain mistakes; the official description above is the record.