Thunderbird allowed the Text Direction Override Unicode Character in filenames. An email attachment could be incorrectly shown as being a document file, while in fact it was an executable file. Newer versions of Thunderbird will strip the character and show the correct file extension. This vulnerability affects Thunderbird < 115.0.1 and Thunderbird < 102.13.1.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3510-1 thunderbird security update
Debian DSA Debian DSA DSA-5463-1 thunderbird security update
EUVD EUVD EUVD-2023-44083 Thunderbird allowed the Text Direction Override Unicode Character in filenames. An email attachment could be incorrectly shown as being a document file, while in fact it was an executable file. Newer versions of Thunderbird will strip the character and show the correct file extension. This vulnerability affects Thunderbird < 115.0.1 and Thunderbird < 102.13.1.
Ubuntu USN Ubuntu USN USN-6333-1 Thunderbird vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 18 Dec 2025 15:30:00 +0000

Type Values Removed Values Added
Title thunderbird: File Extension Spoofing using the Text Direction Override Character File Extension Spoofing using the Text Direction Override Character

Fri, 25 Oct 2024 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2025-12-18T15:22:50.216Z

Reserved: 2023-06-26T17:25:53.967Z

Link: CVE-2023-3417

cve-icon Vulnrichment

Updated: 2024-08-02T06:55:03.371Z

cve-icon NVD

Status : Modified

Published: 2023-07-24T11:15:09.953

Modified: 2024-11-21T08:17:13.330

Link: CVE-2023-3417

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-07-20T00:00:00Z

Links: CVE-2023-3417 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses