# CVE-2015-3812: Denial of service in n/a

> Remote attackers can cause denial of service via memory consumption in Wireshark's X11 dissector by sending crafted packets.

- **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:** 26 May 2015
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2015-3812, GHSA-g66v-ghww-g5gw, UBUNTU-CVE-2015-3812

## What is CVE-2015-3812?

CVE-2015-3812 is a high-severity denial of service vulnerability in Oracle Linux, published on 26 May 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Multiple memory leaks in the x11_init_protocol function in epan/dissectors/packet-x11.c in the X11 dissector in Wireshark 1.10.x before 1.10.14 and 1.12.x before 1.12.5 allow remote attackers to cause a denial of service (memory consumption) via a crafted packet.

Weakness: CWE-399

## Which versions are affected by CVE-2015-3812?

It affects 3 products.


Products: Oracle Linux, Oracle Solaris, Wireshark Wireshark.

## How do I fix CVE-2015-3812?

Upgrade to a fixed version.

## Is CVE-2015-3812 being exploited?

There is no known exploitation of CVE-2015-3812 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Linux

- [CVE-2015-5287](https://insights.sbomify.com/CVE-2015-5287/): Red Hat Automatic Bug Reporting Tool Privilege Escalation (high 7.8, exploited in the wild)
- [CVE-2016-5408](https://insights.sbomify.com/CVE-2016-5408/): Memory corruption in n/a (critical 9.8)
- [CVE-2016-1714](https://insights.sbomify.com/CVE-2016-1714/): Memory corruption in n/a (high 8.1)
- [CVE-2015-2328](https://insights.sbomify.com/CVE-2015-2328/): Denial of service in n/a (high 7.5)
- [CVE-2015-8385](https://insights.sbomify.com/CVE-2015-8385/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-3812 and fix it if it is affected.

What it is: CVE-2015-3812 is a high-severity denial of service vulnerability in Oracle Linux, published on 26 May 2015. 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-2015-3812 in the wild and no public exploit code.

Affected product: Oracle 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-2015-3812/ (Markdown: https://insights.sbomify.com/CVE-2015-3812/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-3812
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-3812
- OSV: https://osv.dev/vulnerability/CVE-2015-3812

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-3812/
Summaries are generated and may contain mistakes; the official description above is the record.