CVE-2021-23998

Mozilla: Secure Lock icon could have been spoofed

Published Jun 24, 2021 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon from an HTTPS page. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2632-1 thunderbird security update
Debian DLA Debian DLA DLA-2633-1 firefox-esr security update
Debian DSA Debian DSA DSA-4895-1 firefox-esr security update
Debian DSA Debian DSA DSA-4897-1 thunderbird security update
EUVD EUVD EUVD-2021-10918 Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon from an HTTPS page. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Ubuntu USN Ubuntu USN USN-4926-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-4995-1 Thunderbird vulnerabilities
Ubuntu USN Ubuntu USN USN-4995-2 Thunderbird vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Aug 3, 2024, 7:14 PM
Reserved
Jan 13, 2021, 12:00 AM
Status
Modified
Published
Jun 24, 2021, 2:15 PM
Modified
Jun 17, 2026, 3:39 AM
Severity
Moderate
Public date
Apr 19, 2021, 12:00 AM