CVE-2000-0246

published 2000-03-30

CVE-2000-0246: IIS 4.0 and 5.0 does not properly perform ISAPI extension processing if a virtual directory is mapped to a UNC share, which allows remote attackers to read the…

Priority P4 34 medium 5 CVSS 2.0

AV N AC L Au N C P I N A N

EXPLOIT

IIS 4.0 and 5.0 does not properly perform ISAPI extension processing if a virtual directory is mapped to a UNC share, which allows remote attackers to read the source code of ASP and other files, aka the "Virtualized UNC Share" vulnerability.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
microsoft	commercial_internet_system	—	—
microsoft	commercial_internet_system	—	—
microsoft	internet_information_server	—	—
microsoft	internet_information_services	—	—
microsoft	proxy_server	—	—
microsoft	site_server	—	—
microsoft	site_server_commerce	—	—

Detection & IOCs extracted from sources · hover to see the quote

url http://target/file.asp\↗

• → Look for HTTP requests where a URL path ends with a backslash '\' appended after an ASP or HTR file extension (e.g., .asp\ or .htr\), which triggers IIS to return raw source code instead of executing the file. ↗
• → Scope detection to virtual hosts whose root is mapped to a UNC share; requests to local-drive-hosted content are NOT affected by this vulnerability. ↗

• · The vulnerability is only exploitable when the IIS virtual directory root is mapped to a UNC (network) share. Local-drive virtual directories are not affected. ↗

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