---
title: "CVE-2016-4583\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-2016-4583?format=md
keywords: index, follow
---

# CVE-2016-4583

Publication date 21 July 2016

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**3.1 · Low**

[Score breakdown](https://ubuntu.com/security/CVE-2016-4583?format=md#impact-score)

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## Description

WebKit in Apple iOS before 9.3.3, Safari before 9.1.2, and tvOS before
9.2.2 allows remote attackers to bypass the Same Origin Policy and obtain
image date from an unintended web site via a timing attack involving an SVG
document.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2016-4583?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| qtwebkit-opensource-src | 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Ignored end of standard support |
| 15.10 wily | Ignored end of life |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Not in release |
| qtwebkit-source | 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Ignored end of standard support |
| 15.10 wily | Ignored end of life |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Ignored end of life |
| webkit | 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 |
| webkit2gtk | 16.10 yakkety | Not affected |
| 16.04 LTS xenial | Fixed 2.12.5-0ubuntu0.16.04.1 |
| 15.10 wily | Ignored end of life |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Not in release |
| webkitgtk | 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Ignored end of standard support |
| 15.10 wily | Ignored end of life |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Not in release |

---

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

## Notes

---

### [jdstrand](https://launchpad.net/~jdstrand)

webkit receives limited support. For details, see
https://wiki.ubuntu.com/SecurityTeam/FAQ#webkit
webkit in Ubuntu uses the JavaScriptCore (JSC) engine, not V8

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

3.1 · Low

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 3.1 · Low |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4583)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-4583)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-4583)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-4583)

### Related Ubuntu Security Notices (USN)

+ [USN-3079-1](https://usn.ubuntu.com/USN-3079-1)
+ WebKitGTK+ vulnerabilities
+ 14 September 2016

### Other references

* <http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html>
* <http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html>
* <http://lists.apple.com/archives/security-announce/2016/Jul/msg00004.html>
* <https://support.apple.com/HT206900>
* <https://support.apple.com/HT206902>
* <https://support.apple.com/HT206905>
* <https://webkitgtk.org/security/WSA-2016-0005.html>
* <https://www.cve.org/CVERecord?id=CVE-2016-4583>