CVEvulnerability

CVE-2020-15663

8.8 HIGH Published 2020-10-01 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-10-01
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
9.3 HIGH — AV:N/AC:M/Au:N/C:C/I:C/A:C
Weaknesses
CWE-427

Description

If Firefox is installed to a user-writable directory, the Mozilla Maintenance Service would execute updater.exe from the install location with system privileges. Although the Mozilla Maintenance Service does ensure that updater.exe is signed by Mozilla, the version could have been rolled back to a previous version which would have allowed exploitation of an older bug and arbitrary code execution with System Privileges. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 80, Thunderbird < 78.2, Thunderbird < 68.12, Firefox ESR < 68.12, and Firefox ESR < 78.2.

Affected configurations

• mozilla firefox (< 80.0) • mozilla firefox (>= 78.0 < 78.2) • mozilla firefox esr (>= 68.0 < 68.12) • mozilla thunderbird (>= 68.0 < 68.12) • mozilla thunderbird (>= 78.0 < 78.2)

Related

Weakness · CWE (1)

  • CWE-427 Uncontrolled Search Path Element weakness

References