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CVE-2016-1949

8.8 · HIGH

Mozilla Firefox before 44.0.2 does not properly restrict the interaction between Service Workers and plugins, which allows remote attackers to bypass the Same Origin Policy via a crafted web site t…

Published Feb 13, 2016CWE-264EPSS 1.50%

Overview

CVE-2016-1949 is a high-severity vulnerability. It was published on February 13, 2016 and has a CVSS 3.0 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Mozilla Firefox before 44.0.2 does not properly restrict the interaction between Service Workers and plugins, which allows remote attackers to bypass the Same Origin Policy via a crafted web site that triggers spoofed responses to requests that use NPAPI, as demonstrated by a request for a crossdomain.xml file.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Reflists.opensuse.org/opensuse-updates/2016-02/msg00102.htmlReflists.opensuse.org/opensuse-updates/2016-02/msg00142.htmlRefwww.mozilla.org/security/announce/2016/mfsa2016-13.htmlRefwww.securitytracker.com/id/1035007Refwww.ubuntu.com/usn/USN-2893-1Refbugzilla.mozilla.org/show_bug.cgi?id=1245724Refsecurity.gentoo.org/glsa/201605-06Reflists.opensuse.org/opensuse-updates/2016-02/msg00102.htmlReflists.opensuse.org/opensuse-updates/2016-02/msg00142.htmlRefwww.mozilla.org/security/announce/2016/mfsa2016-13.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-1949?

CVE-2016-1949 is a high-severity vulnerability. It was published on February 13, 2016 and has a CVSS 3.0 base score of 8.8 (HIGH).

How severe is CVE-2016-1949?

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-1949?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2016-1949?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-1949 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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