CVE-2018-12369

Description

WebExtensions bundled with embedded experiments were not correctly checked for proper authorization. This allowed a malicious WebExtension to gain full browser permissions. This vulnerability affects Firefox ESR < 60.1 and Firefox < 61.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.47% Top 20%
Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1454909 vendor advisory issue tracking permissions required
https://security.gentoo.org/glsa/201810-01 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-15/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-16/ vendor advisory
http://www.securitytracker.com/id/1041193 third party advisory vdb entry
https://usn.ubuntu.com/3705-1/ third party advisory vendor advisory
http://www.securityfocus.com/bid/104561 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2018-12369?
CVE-2018-12369 has been scored as a critical severity vulnerability.
How to fix CVE-2018-12369?
To fix CVE-2018-12369, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-12369 being actively exploited in the wild?
It is possible that CVE-2018-12369 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-12369?
CVE-2018-12369 affects Mozilla Firefox ESR, Mozilla Firefox.
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