---
title: "CVE-2016-2168\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-2016-2168?format=md
keywords: index, follow
---

# CVE-2016-2168

Publication date 5 May 2016

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**6.5 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2016-2168?format=md#impact-score)

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## Description

The req\_check\_access function in the mod\_authz\_svn module in the httpd
server in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4 allows
remote authenticated users to cause a denial of service (NULL pointer
dereference and crash) via a crafted header in a (1) MOVE or (2) COPY
request, involving an authorization check.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| subversion | 17.10 artful | Not affected |
| 17.04 zesty | Not affected |
| 16.10 yakkety | Not affected |
| 16.04 LTS xenial | Fixed 1.9.3-2ubuntu1.1 |
| 15.10 wily | Ignored end of life |
| 14.04 LTS trusty | Fixed 1.8.8-1ubuntu3.3 |
| 12.04 LTS precise | Ignored end of life |

---

* [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**

6.5 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.5 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2168)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-2168)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-2168)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-2168)

### Related Ubuntu Security Notices (USN)

+ [USN-3388-2](https://usn.ubuntu.com/USN-3388-2)
+ Subversion vulnerabilities
+ 24 October 2017

### Other references

* <https://subversion.apache.org/security/CVE-2016-2168-advisory.txt>
* <https://www.cve.org/CVERecord?id=CVE-2016-2168>