# CVE-2015-3164: Auth bypass in n/a

> Local attackers can bypass authentication to read or modify data from arbitrary X11 clients due to XWayland starting in non-authenticating mode.

- **Severity:** Low 3.6 (`AV:L/AC:L/Au:N/C:P/I:P/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 1 Jul 2015
- **Updated:** 6 Aug 2024
- **Also known as:** CVE-2015-3168, DEBIAN-CVE-2015-3164, GHSA-fww3-c3xq-2xqg, MGASA-2015-0316

## What is CVE-2015-3164?

CVE-2015-3164 is a low-severity authentication bypass vulnerability in Opensuse Opensuse, published on 1 Jul 2015. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The authentication setup in XWayland 1.16.x and 1.17.x before 1.17.2 starts the server in non-authenticating mode, which allows local users to read from or send information to arbitrary X11 clients via vectors involving a UNIX socket.

Weakness: CWE-264

## Which versions are affected by CVE-2015-3164?

It affects 3 products.


Products: Opensuse Opensuse, X.org X Server, X.org Xorg-Server.

## How do I fix CVE-2015-3164?

Upgrade to a fixed version.

## Is CVE-2015-3164 being exploited?

There is no known exploitation of CVE-2015-3164 in the wild and no public exploit code.

## Other vulnerabilities in Opensuse Opensuse

- [CVE-2015-5957](https://insights.sbomify.com/CVE-2015-5957/): Memory corruption in n/a (critical 10.0)
- [CVE-2015-0491](https://insights.sbomify.com/CVE-2015-0491/): Memory corruption in n/a (critical 10.0)
- [CVE-2008-2388](https://insights.sbomify.com/CVE-2008-2388/): Integer overflow in n/a (critical 10.0)
- [CVE-2010-1866](https://insights.sbomify.com/CVE-2010-1866/): Integer overflow in n/a (critical 9.8)
- [CVE-2015-0492](https://insights.sbomify.com/CVE-2015-0492/): Other in n/a (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-3164 and fix it if it is affected.

What it is: CVE-2015-3164 is a low-severity authentication bypass vulnerability in Opensuse Opensuse, published on 1 Jul 2015. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2015-3164 in the wild and no public exploit code.

Affected product: Opensuse Opensuse. 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-2015-3164/ (Markdown: https://insights.sbomify.com/CVE-2015-3164/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-3164
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-3164
- OSV: https://osv.dev/vulnerability/CVE-2015-3164

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-3164/
Summaries are generated and may contain mistakes; the official description above is the record.