Description
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.
References (5)
Core 5
Core References
Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1835582
Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/07/msg00032.html
Third Party Advisory
https://www.debian.org/security/2023/dsa-5463
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-27/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-28/
Scores
CVSS v3
7.5
EPSS
0.0021
EPSS Percentile
42.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
Status
published
Products (4)
debian/debian_linux
10.0
debian/debian_linux
11.0
debian/debian_linux
12.0
mozilla/thunderbird
< 102.13.1
Published
Jul 24, 2023
Tracked Since
Feb 18, 2026