CVE-2009-2521

Description

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."

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 60.77% Top 5%
Vendor Advisory microsoft.com Vendor Advisory microsoft.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6508 vdb entry third party advisory signature
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ975191 vendor advisory
http://www.us-cert.gov/cas/techalerts/TA09-286A.html third party advisory us government resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-053 patch vendor advisory
http://archives.neohapsis.com/archives/fulldisclosure/2009-09/0040.html mailing list broken link

Frequently Asked Questions

What is the severity of CVE-2009-2521?
CVE-2009-2521 has been scored as a medium severity vulnerability.
How to fix CVE-2009-2521?
To fix CVE-2009-2521, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-2521 being actively exploited in the wild?
It is possible that CVE-2009-2521 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~61% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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