---
title: "CVE-2015-7215\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-2015-7215?format=md
keywords: index, follow
---

# CVE-2015-7215

Publication date 15 December 2015

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The importScripts function in the Web Workers API implementation in Mozilla
Firefox before 43.0 allows remote attackers to bypass the Same Origin
Policy by triggering use of the no-cors mode in the fetch API to attempt
resource access that throws an exception, leading to information disclosure
after a rethrow.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| firefox | 15.10 wily | Fixed 43.0+build1-0ubuntu0.15.10.1 |
| 15.04 vivid | Fixed 43.0+build1-0ubuntu0.15.04.1 |
| 14.04 LTS trusty | Fixed 43.0+build1-0ubuntu0.14.04.1 |
| 12.04 LTS precise | Fixed 43.0+build1-0ubuntu0.12.04.1 |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7215)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2015-7215)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2015-7215)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2015-7215)

### Related Ubuntu Security Notices (USN)

+ [USN-2833-1](https://usn.ubuntu.com/USN-2833-1)
+ Firefox vulnerabilities
+ 15 December 2015

### Other references

* <https://www.mozilla.org/en-US/security/advisories/mfsa2015-140/>
* <https://www.cve.org/CVERecord?id=CVE-2015-7215>