---
title: "CVE-2017-3138\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2017-3138?format=md
keywords: index, follow
---

# CVE-2017-3138

Publication date 12 April 2017

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2017-3138?format=md#impact-score)

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## Description

named contains a feature which allows operators to issue commands to a
running server by communicating with the server process over a control
channel, using a utility program such as rndc. A regression introduced in a
recent feature change has created a situation under which some versions of
named can be caused to exit with a REQUIRE assertion failure if they are
sent a null command string. Affects BIND 9.9.9->9.9.9-P7,
9.9.10b1->9.9.10rc2, 9.10.4->9.10.4-P7, 9.10.5b1->9.10.5rc2,
9.11.0->9.11.0-P4, 9.11.1b1->9.11.1rc2, 9.9.9-S1->9.9.9-S9.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| bind9 | 17.04 zesty | Fixed 1:9.10.3.dfsg.P4-10.1ubuntu5 |
| 16.10 yakkety | Fixed 1:9.10.3.dfsg.P4-10.1ubuntu1.6 |
| 16.04 LTS xenial | Fixed 1:9.10.3.dfsg.P4-8ubuntu1.6 |
| 14.04 LTS trusty | Fixed 1:9.9.5.dfsg-3ubuntu0.14 |
| 12.04 LTS precise | Fixed 1:9.8.1.dfsg.P1-4ubuntu0.22 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.3 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | High |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.3 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-3138)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-3138)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-3138)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-3138)

### Related Ubuntu Security Notices (USN)

+ [USN-3259-1](https://usn.ubuntu.com/USN-3259-1)
+ Bind vulnerabilities
+ 17 April 2017

### Other references

* <https://kb.isc.org/article/AA-01471/>
* <https://www.cve.org/CVERecord?id=CVE-2017-3138>