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CVE-2018-12368

8.1 · HIGH

Windows 10 does not warn users before opening executable files with the SettingContent-ms extension even when they have been downloaded from the internet and have the "Mark of the Web." Without the…

Published Oct 18, 2018EPSS 4.83%

Overview

CVE-2018-12368 is a high-severity vulnerability. It was published on October 18, 2018 and has a CVSS 3.0 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Windows 10 does not warn users before opening executable files with the SettingContent-ms extension even when they have been downloaded from the internet and have the "Mark of the Web." Without the warning, unsuspecting users unfamiliar with this new file type might run an unwanted executable. This also allows a WebExtension with the limited downloads.open permission to execute arbitrary code without user interaction on Windows 10 systems. *Note: this issue only affects Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60, Thunderbird < 52.9, Firefox ESR < 60.1, Firefox ESR < 52.9, and Firefox < 61.

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

Refwww.securityfocus.com/bid/104560Refwww.securitytracker.com/id/1041193Refbugzilla.mozilla.org/show_bug.cgi?id=1468217Refposts.specterops.io/the-tale-of-settingcontent-ms-files-f1ea253e4d39Refsecurity.gentoo.org/glsa/201810-01Refwww.mozilla.org/security/advisories/mfsa2018-15/Refwww.mozilla.org/security/advisories/mfsa2018-16/Refwww.mozilla.org/security/advisories/mfsa2018-17/Refwww.mozilla.org/security/advisories/mfsa2018-18/Refwww.mozilla.org/security/advisories/mfsa2018-19/

How CyberStrike helps

Frequently asked questions

What is CVE-2018-12368?

CVE-2018-12368 is a high-severity vulnerability. It was published on October 18, 2018 and has a CVSS 3.0 base score of 8.1 (HIGH).

How severe is CVE-2018-12368?

This vulnerability has a CVSS 3.0 base score of 8.1, 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-2018-12368?

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-2018-12368?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-12368 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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