# CVE-2016-0741: Denial of service in n/a

> Remote attackers can cause a denial of service in 389 Directory Server by triggering an infinite loop via an abnormally closed connection.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 19 Apr 2016
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2016-0741, GHSA-hx2c-r32g-8w55, MGASA-2016-0081, RHSA-2016:0204

## What is CVE-2016-0741?

CVE-2016-0741 is a high-severity denial of service vulnerability in Redhat Enterprise Linux, published on 19 Apr 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

slapd/connection.c in 389 Directory Server (formerly Fedora Directory Server) 1.3.4.x before 1.3.4.7 allows remote attackers to cause a denial of service (infinite loop and connection blocking) by leveraging an abnormally closed connection.

Weakness: CWE-399

## Which versions are affected by CVE-2016-0741?

It affects 6 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `389-ds-base` | Red Hat:enterprise_linux:7::client | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-libs` | Red Hat:enterprise_linux:7::client | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-libs` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base` | Red Hat:enterprise_linux:7::server | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-debuginfo` | Red Hat:enterprise_linux:7::server | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-devel` | Red Hat:enterprise_linux:7::server | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-libs` | Red Hat:enterprise_linux:7::server | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-debuginfo` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-devel` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.3.4.0-26.el7_2 |
| `389-ds-base-libs` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.3.4.0-26.el7_2 |

Products: Fedoraproject 389 Directory Server, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Hpc Node, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation.

## How do I fix CVE-2016-0741?

Upgrade to a fixed version.

## Is CVE-2016-0741 being exploited?

There is no known exploitation of CVE-2016-0741 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Enterprise Linux

- [CVE-2017-7551](https://insights.sbomify.com/CVE-2017-7551/): Information disclosure in 389-ds-base (critical 9.8)
- [CVE-2017-15135](https://insights.sbomify.com/CVE-2017-15135/): Auth bypass in 389-ds-base (high 8.1)
- [CVE-2019-10171](https://insights.sbomify.com/CVE-2019-10171/): Denial of service in 389-ds-base (high 7.5)
- [CVE-2018-14638](https://insights.sbomify.com/CVE-2018-14638/): Denial of service in 389-ds-base (high 7.5)
- [CVE-2018-1054](https://insights.sbomify.com/CVE-2018-1054/): Denial of service in 389-ds-base (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-0741 and fix it if it is affected.

What it is: CVE-2016-0741 is a high-severity denial of service vulnerability in Redhat Enterprise Linux, published on 19 Apr 2016. 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-2016-0741 in the wild and no public exploit code.

Affected product: Redhat Enterprise 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-2016-0741/ (Markdown: https://insights.sbomify.com/CVE-2016-0741/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-0741
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-0741
- OSV: https://osv.dev/vulnerability/CVE-2016-0741

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-0741/
Summaries are generated and may contain mistakes; the official description above is the record.