Microsoft Internet Information Server (IIS) contain a flaw that allows a remote attacker to access any file or folder on the Web Server with "anonymous" access. The issue is due to IIS failing to handle Unicode characters in URI requests. By replacing slashes and backslashes with their Unicode equivilent, an attacker can bypass the sanity checks present in IIS that would normally filter and deny such requests.
Classification
Location:
Remote / Network Access
Attack Type:
Input Manipulation
Impact:
Loss of Integrity
Solution:
Patch / RCS
Exploit:
Exploit Public,
Exploit Commercial
Disclosure:
Vendor Verified
OSVDB:
Web Related
Solution
Currently, there are no known workarounds or upgrades to correct this issue.
However, Microsoft has released a patch to address this vulnerability.
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This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.