# CVE-2011-2200: Denial of service in n/a

> Local attackers can cause denial of service or information disclosure in D-Bus via crafted messages due to improper byte order handling.

- **Severity:** Medium 4.6 (`AV:L/AC:L/Au:N/C:P/I:P/A:P`)
- **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:** 22 Jun 2011
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2011-2200, GHSA-8qh5-rr38-7xjm, RHSA-2011:1132

## What is CVE-2011-2200?

CVE-2011-2200 is a medium-severity denial of service vulnerability in n/a, published on 22 Jun 2011. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The _dbus_header_byteswap function in dbus-marshal-header.c in D-Bus (aka DBus) 1.2.x before 1.2.28, 1.4.x before 1.4.12, and 1.5.x before 1.5.4 does not properly handle a non-native byte order, which allows local users to cause a denial of service (connection loss), obtain potentially sensitive information, or conduct unspecified state-modification attacks via crafted messages.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2011-2200?

It affects 2 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `dbus` | Red Hat:enterprise_linux:5::client | All versions | 0:1.1.2-16.el5_7 |
| `dbus-debuginfo` | Red Hat:enterprise_linux:5::client | All versions | 0:1.1.2-16.el5_7 |
| `dbus-libs` | Red Hat:enterprise_linux:5::client | All versions | 0:1.1.2-16.el5_7 |
| `dbus-x11` | Red Hat:enterprise_linux:5::client | All versions | 0:1.1.2-16.el5_7 |
| `dbus` | Red Hat:enterprise_linux:5::client_workstation | All versions | 0:1.1.2-16.el5_7 |
| `dbus-debuginfo` | Red Hat:enterprise_linux:5::client_workstation | All versions | 0:1.1.2-16.el5_7 |
| `dbus-devel` | Red Hat:enterprise_linux:5::client_workstation | All versions | 0:1.1.2-16.el5_7 |
| `dbus` | Red Hat:enterprise_linux:5::server | All versions | 0:1.1.2-16.el5_7 |
| `dbus-debuginfo` | Red Hat:enterprise_linux:5::server | All versions | 0:1.1.2-16.el5_7 |
| `dbus-devel` | Red Hat:enterprise_linux:5::server | All versions | 0:1.1.2-16.el5_7 |
| `dbus-libs` | Red Hat:enterprise_linux:5::server | All versions | 0:1.1.2-16.el5_7 |
| `dbus-x11` | Red Hat:enterprise_linux:5::server | All versions | 0:1.1.2-16.el5_7 |
| `dbus` | Red Hat:enterprise_linux:6::server | All versions | 1:1.2.24-5.el6_1 |
| `dbus-debuginfo` | Red Hat:enterprise_linux:6::server | All versions | 1:1.2.24-5.el6_1 |
| `dbus-devel` | Red Hat:enterprise_linux:6::server | All versions | 1:1.2.24-5.el6_1 |
| `dbus-doc` | Red Hat:enterprise_linux:6::server | All versions | 1:1.2.24-5.el6_1 |
| `dbus-libs` | Red Hat:enterprise_linux:6::server | All versions | 1:1.2.24-5.el6_1 |
| `dbus-x11` | Red Hat:enterprise_linux:6::server | All versions | 1:1.2.24-5.el6_1 |

Products: D-Bus Project D-Bus, Freedesktop Dbus.

## How do I fix CVE-2011-2200?

Upgrade to a fixed version.

## Is CVE-2011-2200 being exploited?

There is no known exploitation of CVE-2011-2200 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2014-3635](https://insights.sbomify.com/CVE-2014-3635/): Memory corruption in n/a (medium 4.4)
- [CVE-2014-3477](https://insights.sbomify.com/CVE-2014-3477/): Denial of service in n/a (medium 4.0)
- [CVE-2014-3638](https://insights.sbomify.com/CVE-2014-3638/): Denial of service in n/a (low 2.1)
- [CVE-2014-3639](https://insights.sbomify.com/CVE-2014-3639/): Denial of service in n/a (low 2.1)
- [CVE-2010-4352](https://insights.sbomify.com/CVE-2010-4352/): Denial of service in n/a (low 2.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-2200 and fix it if it is affected.

What it is: CVE-2011-2200 is a medium-severity denial of service vulnerability in n/a, published on 22 Jun 2011. 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-2011-2200 in the wild and no public exploit code.

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-2011-2200/ (Markdown: https://insights.sbomify.com/CVE-2011-2200/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-2200
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-2200
- OSV: https://osv.dev/vulnerability/CVE-2011-2200

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-2200/
Summaries are generated and may contain mistakes; the official description above is the record.