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CVE-2011-3647

9.3 · HIGH

The JSSubScriptLoader in Mozilla Firefox before 3.6.24 and Thunderbird before 3.1.6 does not properly handle XPCNativeWrappers during calls to the loadSubScript method in an add-on, which makes it…

Published Nov 9, 2011mozillaCWE-20EPSS 1.88%

Overview

CVE-2011-3647 is a high-severity vulnerability affecting mozilla firefox. It was published on November 9, 2011 and has a CVSS 2.0 base score of 9.3 (HIGH).

This vulnerability has a CVSS 2.0 base score of 9.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The JSSubScriptLoader in Mozilla Firefox before 3.6.24 and Thunderbird before 3.1.6 does not properly handle XPCNativeWrappers during calls to the loadSubScript method in an add-on, which makes it easier for remote attackers to gain privileges via a crafted web site that leverages certain unwrapping behavior, a related issue to CVE-2011-3004.

Remediation

Check the references section for vendor advisories and patches from mozilla. Update firefox 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
mozillathunderbird0Affected

References

Reflists.opensuse.org/opensuse-security-announce/2011-11/msg00020.htmlRefwww.mozilla.org/security/announce/2011/mfsa2011-46.htmlRefwww.redhat.com/support/errata/RHSA-2011-1439.htmlRefbugzilla.mozilla.org/show_bug.cgi?id=680880Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13550Reflists.opensuse.org/opensuse-security-announce/2011-11/msg00020.htmlRefwww.mozilla.org/security/announce/2011/mfsa2011-46.htmlRefwww.redhat.com/support/errata/RHSA-2011-1439.htmlRefbugzilla.mozilla.org/show_bug.cgi?id=680880Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13550

How CyberStrike helps

Frequently asked questions

What is CVE-2011-3647?

CVE-2011-3647 is a high-severity vulnerability affecting mozilla firefox. It was published on November 9, 2011 and has a CVSS 2.0 base score of 9.3 (HIGH).

How severe is CVE-2011-3647?

This vulnerability has a CVSS 2.0 base score of 9.3, 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-2011-3647?

Check the references section for vendor advisories and patches from mozilla. Update firefox 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-2011-3647?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-3647 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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