Description
A unicode RTL order character in the downloaded file name can be used to change the file's name during the download UI flow to change the file extension. This vulnerability affects Firefox for iOS < 28.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_misc
https://www.mozilla.org/security/advisories/mfsa2020-34/
Issue Tracking, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1649160
Scores
CVSS v3
4.3
EPSS
0.0019
EPSS Percentile
40.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Details
Status
published
Products (1)
mozilla/firefox
< 28.0
Published
Aug 10, 2020
Tracked Since
Feb 18, 2026