---
title: "CVE-2017-2633\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-2017-2633?format=md
keywords: index, follow
---

# CVE-2017-2633

Publication date 22 February 2017

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-2017-2633?format=md#impact-score)

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## Description

An out-of-bounds memory access issue was found in Quick Emulator (QEMU)
before 1.7.2 in the VNC display driver. This flaw could occur while
refreshing the VNC display surface area in the
'vnc\_refresh\_server\_surface'. A user inside a guest could use this flaw to
crash the QEMU process.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| qemu | 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Not affected |
| 17.04 zesty | Not affected |
| 16.10 yakkety | Not affected |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Fixed 2.0.0+dfsg-2ubuntu1.33 |
| 12.04 LTS precise | Not in release |
| qemu-kvm | 21.04 hirsute | Not in release |
| 20.10 groovy | Not in release |
| 20.04 LTS focal | Not in release |
| 19.10 eoan | Not in release |
| 19.04 disco | Not in release |
| 18.10 cosmic | Not in release |
| 18.04 LTS bionic | Not in release |
| 17.10 artful | Not in release |
| 17.04 zesty | Not in release |
| 16.10 yakkety | Not in release |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |
| 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)
* [Patch details](https://ubuntu.com/security/CVE-2017-2633?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| qemu | * Upstream:   <http://git.qemu-project.org/?p=qemu.git;a=commit;h=9f64916da20eea67121d544698676295bbb105a7> * Upstream:   <http://git.qemu-project.org/?p=qemu.git;a=commit;h=bea60dd7679364493a0d7f5b54316c767cf894ef> |

## 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-2017-2633)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-2633)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-2633)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-2633)

### Related Ubuntu Security Notices (USN)

+ [USN-3261-1](https://usn.ubuntu.com/USN-3261-1)
+ QEMU vulnerabilities
+ 20 April 2017

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2017-2633>