CVE-2009-4445
Overview
CVE-2009-4445 is a known-severity vulnerability affecting microsoft internet_information_services. It was published on December 29, 2009.
Technical Description
Microsoft Internet Information Services (IIS), when used in conjunction with unspecified third-party upload applications, allows remote attackers to create empty files with arbitrary extensions via a filename containing an initial extension followed by a : (colon) and a safe extension, as demonstrated by an upload of a .asp:.jpg file that results in creation of an empty .asp file, related to support for the NTFS Alternate Data Streams (ADS) filename syntax. NOTE: it could be argued that this is a vulnerability in the third-party product, not IIS, because the third-party product should be applying its extension restrictions to the portion of the filename before the colon.
Remediation
Check the references section for vendor advisories and patches from microsoft. Update internet_information_services to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| microsoft | internet_information_services | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2009-4445?
CVE-2009-4445 is a known-severity vulnerability affecting microsoft internet_information_services. It was published on December 29, 2009.
How severe is CVE-2009-4445?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2009-4445?
Check the references section for vendor advisories and patches from microsoft. Update internet_information_services to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2009-4445?
CyberStrike's AI-powered security agents can automatically detect CVE-2009-4445 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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