CVE-2018-18505

Description

An earlier fix for an Inter-process Communication (IPC) vulnerability, CVE-2011-3079, added authentication to communication between IPC endpoints and server parents during IPC process creation. This authentication is insufficient for channels created after the IPC process is started, leading to the authentication not being correctly applied to later channels. This could allow for a sandbox escape through IPC channels due to lack of message validation in the listener process. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.

Category

10.0
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.98% Top 15%
Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory opensuse.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2019:0219 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-01/ vendor advisory
https://usn.ubuntu.com/3897-1/ third party advisory vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1087565 issue tracking patch vendor advisory
http://www.securityfocus.com/bid/106781 vdb entry third party advisory
https://security.gentoo.org/glsa/201903-04 third party advisory vendor advisory
https://usn.ubuntu.com/3874-1/ third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:0269 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:0218 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-02/ vendor advisory
https://www.debian.org/security/2019/dsa-4376 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2019/01/msg00025.html third party advisory mailing list
https://www.mozilla.org/security/advisories/mfsa2019-03/ vendor advisory
https://www.debian.org/security/2019/dsa-4392 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:0270 third party advisory vendor advisory
https://security.gentoo.org/glsa/201904-07 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-18505?
CVE-2018-18505 has been scored as a critical severity vulnerability.
How to fix CVE-2018-18505?
To fix CVE-2018-18505, 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-2018-18505 being actively exploited in the wild?
It is possible that CVE-2018-18505 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-18505?
CVE-2018-18505 affects Mozilla Thunderbird, Mozilla Firefox ESR, Mozilla Firefox.
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