MS09-053: Microsoft IIS FTPd NLST Command Remote Buffer Overflow (975191) (uncredentialed check)

critical Nessus Plugin ID 40825
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The remote anonymous FTP server seems vulnerable to an arbitrary code execution attack.


The remote FTP server allows anonymous users to create directories in one or more locations.

The remote version of this server is vulnerable to a buffer overflow attack in the NLST command which, when coupled with the ability to create arbitrary directories, may allow an attacker to execute arbitrary commands on the remote Windows host with SYSTEM privileges.


Microsoft has released a set of patches for IIS 5.0, 5.1, 6.0, and 7.0.

See Also

Plugin Details

Severity: Critical

ID: 40825

File Name: iis5_ftp_overflow.nasl

Version: 1.29

Type: remote

Family: FTP

Published: 10/13/2009

Updated: 8/5/2020

Dependencies: ftp_anonymous.nasl, ftp_writeable_directories.nasl

Risk Information

CVSS Score Source: CVE-2009-3023


Risk Factor: High

Score: 7.4


Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:F/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:iis

Required KB Items: ftp/tested_writeable_dir

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/13/2009

Vulnerability Publication Date: 9/1/2009

Exploitable With


Core Impact

Metasploit (MS09-053 Microsoft IIS FTP Server NLST Response Overflow)

Reference Information

CVE: CVE-2009-3023

BID: 36189

CERT: 276653

IAVB: 2009-B-0052-S

MSFT: MS09-053

MSKB: 975191, 975254

CWE: 119