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IIS Remote Command Execution
Information
Severity
Severity
High
Family
Family
Web Servers
CVSSv2 Base
CVSSv2 Base
7.5
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Solution Type
Solution Type
Vendor Patch
Created
Created
18 years ago
Modified
Modified
5 years ago
Summary
When IIS receives a user request to run a script, it renders the request in a decoded canonical form, then performs security checks on the decoded request.
Insight
Insight
A vulnerability results because a second, superfluous decoding pass is performed after the initial security checks are completed. Thus, a specially crafted request could allow an attacker to execute arbitrary commands on the IIS Server.
Solution
Solution
See MS advisory MS01-026(Superseded by ms01-044)