CVE-2023-3417

File Extension Spoofing using the Text Direction Override Character

published July 24, 2023

CVSS
—
EPSS
1%
Percentile
51.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00669 · 51.3th percentile
Published
2023-07-24T10:09Z
EPSS history
Timeline
  • 24 JUL 10:09Z
    File Extension Spoofing using the Text Direction Override Character
    cvelistv5