==========================================================================
Ubuntu Security Notice USN-6589-1
January 18, 2024

filezilla vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

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

Software Description:
- 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.

Update instructions:

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

Ubuntu 23.10:
  filezilla                       3.65.0-3ubuntu0.1
  filezilla-common                3.65.0-3ubuntu0.1

Ubuntu 22.04 LTS:
  filezilla                       3.58.0-1ubuntu0.1
  filezilla-common                3.58.0-1ubuntu0.1

Ubuntu 20.04 LTS:
  filezilla                       3.46.3-1ubuntu0.1
  filezilla-common                3.46.3-1ubuntu0.1

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

References:
  https://ubuntu.com/security/notices/USN-6589-1
  CVE-2023-48795

Package Information:
  https://launchpad.net/ubuntu/+source/filezilla/3.65.0-3ubuntu0.1
  https://launchpad.net/ubuntu/+source/filezilla/3.58.0-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/filezilla/3.46.3-1ubuntu0.1