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CVE-2018-18505

CVE information

Published

5 years ago

Last Modified

4 years ago

CVSSv2.0 Severity

High

CVSSv3.1 Severity

Critical

Impact Analysis

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..

CVSSv2.0 Score

Severity
High
Base Score
7.5/10
Exploit Score
10/10
Access Vector
Network
Access Complexity
Low
Authentication Required
None
Impact Score
6.4/10
Confidentiality Impact
Partial
Availability Impact
Partial
Integrity Impact
Partial

CVSSv3.1 Score

Severity
Critical
Base Score
10/10
Exploit Score
3.9/10
Access Vector
Network
Access Complexity
Low
Privileges Required
None
Impact Score
6/10
Confidentiality Impact
High
Availability Impact
High
Integrity Impact
High
Scope
Changed
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
  Yes
- 65.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
  Yes
- 60.5.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
  Yes
- 60.5.0
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*
  Yes
- -