---
title: "CVE-2016-3171\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-2016-3171?format=md
keywords: index, follow
---

# CVE-2016-3171

Publication date 12 April 2016

Last updated 17 July 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**8.1 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2016-3171?format=md#impact-score)

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## Description

Drupal 6.x before 6.38, when used with PHP before 5.4.45, 5.5.x before
5.5.29, or 5.6.x before 5.6.13, might allow remote attackers to execute
arbitrary code via vectors related to session data truncation.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| drupal6 | 17.04 zesty | Not in release |
| 16.10 yakkety | Not in release |
| 16.04 LTS xenial | Not in release |
| 15.10 wily | Not in release |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Ignored end of life |
| drupal7 | 17.04 zesty | Not affected |
| 16.10 yakkety | Not affected |
| 16.04 LTS xenial | Not affected |
| 15.10 wily | Not affected |
| 14.04 LTS trusty | Not affected |
| 12.04 LTS precise | Not affected |

---

* [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**

8.1 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.1 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3171)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-3171)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-3171)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-3171)

### Other references

* <https://www.drupal.org/SA-CORE-2016-001>
* <http://www.openwall.com/lists/oss-security/2016/02/24/19>
* <https://www.cve.org/CVERecord?id=CVE-2016-3171>