CVE-2023-25729

Mozilla: Extensions could have opened external schemes without user knowledge

Published Jun 2, 2023 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code> resulting in extensions being able to open them without user interaction via <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or interacting with software already installed on the system. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3319-1 firefox-esr security update
Debian DLA Debian DLA DLA-3324-1 thunderbird security update
Debian DSA Debian DSA DSA-5350-1 firefox-esr security update
Debian DSA Debian DSA DSA-5355-1 thunderbird security update
EUVD EUVD EUVD-2023-29636 Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code> resulting in extensions being able to open them without user interaction via <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or interacting with software already installed on the system. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
Ubuntu USN Ubuntu USN USN-5880-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-5943-1 Thunderbird vulnerabilities
History
Type Values Removed Values Added
Weaknesses CWE-863
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Jan 10, 2025, 5:35 PM
Reserved
Feb 13, 2023, 12:00 AM
Status
Modified
Published
Jun 2, 2023, 5:15 PM
Modified
Jun 17, 2026, 5:41 AM
Severity
Moderate
Public date
Feb 14, 2023, 12:00 AM