CVE-2009-2521

Microsoft IIS 5.0/6.0 FTP Server - Stack Exhaustion Denial of Service

Severity Score

5.0

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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."

Una vulnerabilidad de consumo de pila en el Servicio FTP en Internet Information Services (IIS) de Microsoft versiones 5.0 hasta 7.0, permite a los usuarios autenticados remotos causar una denegación de servicio (bloqueo del demonio) por medio de un comando list (ls) -R que contiene un comodín que hace referencia a un subdirectorio, seguido por un .. (punto punto), también se conoce como "IIS FTP Service DoS Vulnerability".

*Credits: N/A

CVSS Scores

NISTv2 5.0

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2009-07-17 CVE Reserved
2009-09-04 CVE Published
2009-09-04 First Exploit
2024-08-07 CVE Updated
2024-09-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (7)

URL	Tag	Source
http://archives.neohapsis.com/archives/fulldisclosure/2009-09/0040.html	Broken Link
http://www.us-cert.gov/cas/techalerts/TA09-286A.html	Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6508	Signature

URL	Date	SRC
https://www.exploit-db.com/exploits/9587	2009-09-04
https://www.exploit-db.com/exploits/17476	2011-07-03

URL	Date	SRC
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-053	2023-11-07

URL	Date	SRC
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ975191	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"		Internet Information Services Search vendor "Microsoft" for product "Internet Information Services"				>= 5.0 <= 7.0 Search vendor "Microsoft" for product "Internet Information Services" and version " >= 5.0 <= 7.0"		-		Affected