---
title: "CVE-2017-9800\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-2017-9800?format=md
keywords: index, follow
---

# CVE-2017-9800

Publication date 10 August 2017

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2017-9800?format=md#impact-score)

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## Description

A maliciously constructed svn+ssh:// URL would cause Subversion clients
before 1.8.19, 1.9.x before 1.9.7, and 1.10.0.x through 1.10.0-alpha3 to
run an arbitrary shell command. Such a URL could be generated by a
malicious server, by a malicious user committing to a honest server (to
attack another user of that server's repositories), or by a proxy server.
The vulnerability affects all clients, including those that use file://,
http://, and plain (untunneled) svn://.

### From the Ubuntu Security Team

Joern Schneeweisz discovered that Subversion did not properly handle
host names in 'svn+ssh://' URLs. A remote attacker could use this
to construct a subversion repository that when accessed could run
arbitrary code with the privileges of the user.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| subversion | 17.10 artful | Not affected |
| 17.04 zesty | Fixed 1.9.5-1ubuntu1.1 |
| 16.04 LTS xenial | Fixed 1.9.3-2ubuntu1.1 |
| 14.04 LTS trusty | Fixed 1.8.8-1ubuntu3.3 |

---

* [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**

9.8 · Critical

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.8 · Critical |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9800)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-9800)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-9800)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-9800)

### Related Ubuntu Security Notices (USN)

+ [USN-3388-1](https://usn.ubuntu.com/USN-3388-1)
+ Subversion vulnerabilities
+ 11 August 2017

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

### Other references

* <https://subversion.apache.org/security/CVE-2017-9800-advisory.txt>
* <https://www.cve.org/CVERecord?id=CVE-2017-9800>