# CVE-2012-2134: Denial of service in n/a

> Remote attackers can cause a denial of service in bind-dyndb-ldap by sending a malformed LDAP search query, hanging the named server.

- **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 26 Feb 2014
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-cq5c-cr6p-vfwm, RHSA-2012:0683

## What is CVE-2012-2134?

CVE-2012-2134 is a medium-severity denial of service vulnerability in n/a, published on 26 Feb 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The handle_connection_error function in ldap_helper.c in bind-dyndb-ldap before 1.1.0rc1 does not properly handle LDAP query errors, which allows remote attackers to cause a denial of service (infinite loop and named server hang) via a non-alphabet character in the base DN in an LDAP search DNS query.

Weakness: CWE-399

## Which versions are affected by CVE-2012-2134?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `bind-dyndb-ldap` | Red Hat:enterprise_linux:6::server | All versions | 0:0.2.0-7.el6_2.1 |
| `bind-dyndb-ldap-debuginfo` | Red Hat:enterprise_linux:6::server | All versions | 0:0.2.0-7.el6_2.1 |
| `bind-dyndb-ldap` | Red Hat:enterprise_linux:6::workstation | All versions | 0:0.2.0-7.el6_2.1 |
| `bind-dyndb-ldap-debuginfo` | Red Hat:enterprise_linux:6::workstation | All versions | 0:0.2.0-7.el6_2.1 |

Products: Martin Nagy Bind-Dyndb-Ldap.

## How do I fix CVE-2012-2134?

Upgrade to a fixed version.

## Is CVE-2012-2134 being exploited?

There is no known exploitation of CVE-2012-2134 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2012-3429](https://insights.sbomify.com/CVE-2012-3429/): Denial of service in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-2134 and fix it if it is affected.

What it is: CVE-2012-2134 is a medium-severity denial of service vulnerability in n/a, published on 26 Feb 2014. 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-2012-2134 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-2012-2134/ (Markdown: https://insights.sbomify.com/CVE-2012-2134/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-2134
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-2134
- OSV: https://osv.dev/vulnerability/CVE-2012-2134

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-2134/
Summaries are generated and may contain mistakes; the official description above is the record.