CVE-2018-12386

Public Exploit

Description

A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.

Category

8.1
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 42.07% Top 5%
Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://security.gentoo.org/glsa/201810-01 third party advisory vendor advisory
http://www.securityfocus.com/bid/105460 third party advisory vdb entry
https://usn.ubuntu.com/3778-1/ third party advisory vendor advisory
https://www.debian.org/security/2018/dsa-4310 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:2884 third party advisory vendor advisory
http://www.securitytracker.com/id/1041770 third party advisory vdb entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1493900 patch exploit vendor advisory issue tracking
https://www.mozilla.org/security/advisories/mfsa2018-24/ vendor advisory
https://access.redhat.com/errata/RHSA-2018:2881 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-12386?
CVE-2018-12386 has been scored as a high severity vulnerability.
How to fix CVE-2018-12386?
To fix CVE-2018-12386, 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-2018-12386 being actively exploited in the wild?
It is possible that CVE-2018-12386 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~42% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-12386?
CVE-2018-12386 affects Mozilla Firefox ESR, Mozilla Firefox.
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