CVE-2023-3417

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.

• https://bugzilla.mozilla.org/show_bug.cgi?id=1835582Permissions Required
• https://lists.debian.org/debian-lts-announce/2023/07/msg00032.htmlMailing List, Third Party Advisory
• https://www.debian.org/security/2023/dsa-5463Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-27/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-28/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1835582Permissions Required
• https://lists.debian.org/debian-lts-announce/2023/07/msg00032.htmlMailing List, Third Party Advisory
• https://www.debian.org/security/2023/dsa-5463Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-27/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-28/Vendor Advisory

Published

Jul 24, 2023

Last Modified

Jun 17, 2026

Status

Modified

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