Home/CVE/Stack consumption vulnerability in the FTP Service in Microsoft Internet Information Services (IIS) 5.0 through 7.0 allo
CVE

CVE-2009-2521

Stack consumption vulnerability in the FTP Service in Microsoft Internet Information Services (IIS) 5.0 through 7.0 allo

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.".

MEDIUM · CVSS 5 EPSS 0.60775
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 2% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
▤

Affected Products & Versions

1
microsoft internet information services>= 5.0 and <= 7.0
⚠

Public Exploits & PoCs

2
dosMicrosoft IIS 7.0 FTP Server - Stack Exhaustion Denial of Service (MS09-053) (Metasploit)2011-07-03
dosMicrosoft IIS 5.0/6.0 FTP Server - Stack Exhaustion Denial of Serviceverified
▣

Scoring & Timeline

5
MEDIUM · CVSS v2 (legacy) · secure@microsoft.com
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Published to NVD04 Sep 2009 · 10:30 AM
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://archives.neohapsis.com/archives/fulldisclosure/2009-09/0040.htmlBroken Link
http://support.microsoft.com/default.aspx?scid=kb
http://www.us-cert.gov/cas/techalerts/TA09-286A.htmlThird Party AdvisoryUS Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-053PatchVendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6508Third Party Advisory
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