CVE-2020-12397

Mozilla: Sender Email Address Spoofing using encoded Unicode characters

Published May 22, 2020 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address that Thunderbird displays. This vulnerability affects Thunderbird < 68.8.0.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2206-1 thunderbird security update
Debian DSA Debian DSA DSA-4683-1 thunderbird security update
EUVD EUVD EUVD-2020-4709 By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address that Thunderbird displays. This vulnerability affects Thunderbird < 68.8.0.
Ubuntu USN Ubuntu USN USN-4373-1 Thunderbird vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Aug 4, 2024, 11:56 AM
Reserved
Apr 28, 2020, 12:00 AM
Status
Modified
Published
May 22, 2020, 7:15 PM
Modified
Jun 17, 2026, 2:51 AM
Severity
Low
Public date
May 5, 2020, 12:00 AM