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CVE-2015-7215

5.0 · MEDIUM

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…

Published Dec 16, 2015fedoraprojectCWE-200EPSS 2.53%

Overview

CVE-2015-7215 is a medium-severity vulnerability affecting fedoraproject fedora. It was published on December 16, 2015 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from fedoraproject. Update fedora to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
mozillafirefox0Affected

References

Reflists.fedoraproject.org/pipermail/package-announce/2015-December/174083.htmlReflists.fedoraproject.org/pipermail/package-announce/2015-December/174253.htmlReflists.opensuse.org/opensuse-updates/2015-12/msg00104.htmlReflists.opensuse.org/opensuse-updates/2016-02/msg00007.htmlReflists.opensuse.org/opensuse-updates/2016-02/msg00008.htmlRefwww.mozilla.org/security/announce/2015/mfsa2015-140.htmlRefwww.securityfocus.com/bid/79280Refwww.securitytracker.com/id/1034426Refwww.ubuntu.com/usn/USN-2833-1Refbugzilla.mozilla.org/show_bug.cgi?id=1160890

How CyberStrike helps

Frequently asked questions

What is CVE-2015-7215?

CVE-2015-7215 is a medium-severity vulnerability affecting fedoraproject fedora. It was published on December 16, 2015 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2015-7215?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-7215?

Check the references section for vendor advisories and patches from fedoraproject. Update fedora to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2015-7215?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-7215 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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