USN-6589-1: FileZilla vulnerability

Publication date

18 January 2024

Overview

FileZilla could be made to expose sensitive information over the network.


Packages

  • filezilla - Full-featured graphical FTP/FTPS/SFTP client

Details

Fabian Baeumer, Marcus Brinkmann and Joerg Schwenk discovered that the SSH
protocol used in FileZilla is prone to a prefix truncation attack, known as
the "Terrapin attack". A remote attacker could use this issue to downgrade or
disable some security features and obtain sensitive information.

Fabian Baeumer, Marcus Brinkmann and Joerg Schwenk discovered that the SSH
protocol used in FileZilla is prone to a prefix truncation attack, known as
the "Terrapin attack". A remote attacker could use this issue to downgrade or
disable some security features and obtain sensitive information.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
23.10 mantic filezilla –  3.65.0-3ubuntu0.1
filezilla-common –  3.65.0-3ubuntu0.1
22.04 jammy filezilla –  3.58.0-1ubuntu0.1
filezilla-common –  3.58.0-1ubuntu0.1
20.04 focal filezilla –  3.46.3-1ubuntu0.1
filezilla-common –  3.46.3-1ubuntu0.1

Reduce your security exposure

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Have additional questions?

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