Vulnerability Name:

CVE-2009-2521 (CCN-53034)

Assigned:2009-09-04
Published:2009-09-04
Updated:2020-11-23
Summary:Stack consumption vulnerability in the FTP Service in Microsoft Internet Information Services (IIS) 5.0 through 7.0 allows remote authenticated users to cause a denial of service (daemon crash) via a list (ls) -R command containing a wildcard that references a subdirectory, followed by a .. (dot dot), aka "IIS FTP Service DoS Vulnerability."
CVSS v3 Severity:7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
3.7 Low (Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
5.8 Medium (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-400
Vulnerability Consequences:Denial of Service
References:Source: CCN
Type: Full-Disclosure Mailing List, Thu Sep 03 2009 - 16:53:52 CDT
Microsoft Internet Information Services 5.0/6.0 FTP SERVER DENIAL OF SERVICE ("Stack Exhaustion")

Source: FULLDISC
Type: Broken Link
20090903 Microsoft Internet Information Services 5.0/6.0 FTP SERVER DENIAL OF SERVICE ("Stack Exhaustion")

Source: MITRE
Type: CNA
CVE-2009-2521

Source: CCN
Type: SA36594
Microsoft IIS FTP Server Recursive Listing Denial of Service

Source: MSKB
Type: Patch, Vendor Advisory
975191

Source: CCN
Type: Microsoft Web site
Microsoft FTP Service 7.5 for IIS 7.0 (x86)

Source: CCN
Type: Microsoft Security Advisory (975191)
Vulnerabilities in the FTP Service in Internet Information Services

Source: CCN
Type: Microsoft Security Bulletin MS09-053
Vulnerabilities in FTP Service for Internet Information Services Could Allow Remote Code Execution (975254)

Source: CCN
Type: BID-36273
Microsoft IIS FTPd Globbing Functionality Remote Denial of Service Vulnerability

Source: CERT
Type: Third Party Advisory, US Government Resource
TA09-286A

Source: MS
Type: Patch, Vendor Advisory
MS09-053

Source: XF
Type: UNKNOWN
is-directorylistings-dos(53034)

Source: OVAL
Type: Third Party Advisory
oval:org.mitre.oval:def:6508

Vulnerable Configuration:Configuration 1:
  • cpe:/a:microsoft:internet_information_services:*:*:*:*:*:*:*:* (Version >= 5.0 and <= 7.0)

    • Configuration CCN 1:
  • cpe:/a:microsoft:internet_information_server:6.0:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:internet_information_server:5.0:::far_east:*:*:*:*
  • OR cpe:/a:microsoft:internet_information_services:5.1:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:*:*:*:*:*:x32:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:itanium:*
  • AND
  • cpe:/o:microsoft:windows_2000:-:sp4:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows:xp:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_vista:*:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows:server_2003:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows:server_2003:sp2:itanium:*:*:*:*:*
  • OR cpe:/o:microsoft:windows:server_2003:sp2:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_vista:-:*:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_vista:-:sp1:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_vista:-:sp1:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:*:*:*:*:*:itanium:*
  • OR cpe:/o:microsoft:windows_server_2008:*:*:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows:xp:sp3:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_vista:-:sp2:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x32:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x64:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.mitre.oval:def:6508
    V
    		IIS FTP Service DoS Vulnerability
    2014-08-18
    BACK
    microsoft internet information services *
    microsoft iis 6.0
    microsoft internet information server 5.0
    microsoft internet information server 5.1
    microsoft windows server 2008 -
    microsoft windows server 2008
    microsoft windows 2000 - sp4
    microsoft windows xp sp2
    microsoft windows vista *
    microsoft windows server_2003 sp2
    microsoft windows server_2003 sp2
    microsoft windows server_2003 sp2
    microsoft windows vista -
    microsoft windows vista - sp1
    microsoft windows vista - sp1
    microsoft windows server 2008 -
    microsoft windows server 2008 -
    microsoft windows xp sp3
    microsoft windows vista - sp2
    microsoft windows vista - sp2
    microsoft windows server 2008 sp2
    microsoft windows server 2008 sp2