CVE-2020-15663 — Uncontrolled Search Path Element in Mozilla Firefox

CWE-427 — Uncontrolled Search Path ElementCWE-282 — Improper Ownership ManagementCWE-269 — Improper Privilege Management11 documents7 sources
Severity
8.8HIGHNVD
EPSS
1.7%
top 17.82%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird
Timeline
PublishedOct 1
Latest updateMay 24

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 sy…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages6 packages

▶CVEListV5mozilla/firefoxunspecified — 80
▶NVDmozilla/firefox78.0 — 78.2+1
▶CVEListV5mozilla/firefox_esrunspecified — 68.12+1
▶NVDmozilla/firefox_esr68.0 — 68.12
▶CVEListV5mozilla/thunderbirdunspecified — 78.2+1

🔴Vulnerability Details

2
GHSA
GHSA-fj34-jgxp-cv4f: If Firefox is installed to a user-writable directory, the Mozilla Maintenance Service would execute updater↗2022-05-24
▶
CVEList
CVE-2020-15663: If Firefox is installed to a user-writable directory, the Mozilla Maintenance Service would execute updater↗2020-10-01
▶

📋Vendor Advisories

7
Red Hat
Mozilla: Downgrade attack on the Mozilla Maintenance Service could have resulted in escalation of privilege↗2020-08-25
▶
Debian
CVE-2020-15663: firefox - If Firefox is installed to a user-writable directory, the Mozilla Maintenance Se...↗2020
▶
Mozilla
Mozilla Foundation Security Advisory 2020-41: CVE-2020-15663↗
▶
Mozilla
Mozilla Foundation Security Advisory 2020-36: CVE-2020-15663↗
▶
Mozilla
Mozilla Foundation Security Advisory 2020-37: CVE-2020-15663↗
▶

💬Community

1
Bugzilla
CVE-2020-15663 Mozilla: Downgrade attack on the Mozilla Maintenance Service could have resulted in escalation of privilege↗2020-08-26
▶
CVE-2020-15663 — Uncontrolled Search Path Element | cvebase