CVE-2018-18505
10.0
CRITICAL
CVSS 3.1
EPSS 2.0%
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.
How to fix CVE-2018-18505
To remediate CVE-2018-18505, upgrade the affected package to a fixed version below.
- —upgrade to 60.5.0esr-1 or later
- —upgrade to 1:60.5.0-1 or later
Is CVE-2018-18505 being exploited?
Low — EPSS is 2.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 60.5.0esr-1
- from 0, < 1:60.5.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL10.0 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |