Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2018-18505

Disclosure Date: February 05, 2019 •
CVE-2018-18505 CVSS v3 Base Score: 10.0
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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.

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CVSS V3 Severity and Metrics
Base Score:
10.0 Critical
Impact Score:
6
Exploitability Score:
3.9
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
Thunderbird 60.5
Firefox ESR 60.5
Firefox 65
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • canonical,
  • debian,
  • mozilla,
  • redhat

Products

  • debian linux 8.0,
  • debian linux 9.0,
  • enterprise linux desktop 6.0,
  • enterprise linux desktop 7.0,
  • enterprise linux server 6.0,
  • enterprise linux server 7.0,
  • enterprise linux server aus 7.6,
  • enterprise linux server eus 7.6,
  • enterprise linux server tus 7.6,
  • enterprise linux workstation 6.0,
  • enterprise linux workstation 7.0,
  • firefox,
  • firefox esr,
  • thunderbird,
  • ubuntu linux 14.04,
  • ubuntu linux 16.04,
  • ubuntu linux 18.04,
  • ubuntu linux 18.10
Technical Analysis