FileZilla Client < 3.7.2 SFTP Integer Overflow

Medium Nessus Plugin ID 69476


The remote Windows host has an application that is affected by a remote integer overflow vulnerability.


The version of FileZilla Client on the remote host is a version prior to 3.7.2. As such, it is affected by an integer overflow vulnerability that exists in the 'getstring()' function from PuTTY used to handle SFTP. This can lead to a heap overflow during the SSH handshake prior to authentication, due to improper bounds checking of the length parameter received from the SFTP server. An attacker could exploit this issue by tricking a user into connecting to a specially crafted SFTP server. This could lead to a denial of service, and potentially code execution.


Upgrade to FileZilla Client 3.7.2 or later.

See Also

Plugin Details

Severity: Medium

ID: 69476

File Name: filezilla_372.nasl

Version: $Revision: 1.3 $

Type: local

Agent: windows

Family: Windows

Published: 2013/08/13

Modified: 2013/10/01

Dependencies: 69475

Risk Information

Risk Factor: Medium


Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:filezilla:filezilla

Required KB Items: SMB/Registry/Enumerated, SMB/filezilla/Installed

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2013/08/06

Vulnerability Publication Date: 2013/08/05

Reference Information

CVE: CVE-2013-4852

BID: 61599

OSVDB: 95970