CVE-1999-0191

published 1997-09-01

CVE-1999-0191: IIS newdsn.exe CGI script allows remote users to overwrite files.

Priority P4 29 medium 6.4 CVSS 2.0

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

EXPLOIT

IIS newdsn.exe CGI script allows remote users to overwrite files.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
microsoft	internet_information_server	—	—

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

filename newdsn.exe↗

path wwwroot/scripts/tools/newdsn.exe↗

url http://vulnerable.site.comtools/newdsn.exe?driver=Microsoft%2BAccess%2BDriver%2B%28*.mdb%29&dsn=Evil+samples+from+microsoft&dbq=..%2F..%2Fwwwroot%2Fevil.html&newdb=CREATE_DB↗

• → Detect HTTP GET requests to /scripts/tools/newdsn.exe with the 'newdb=CREATE_DB' parameter, which triggers remote file creation. ↗
• → Monitor for path traversal sequences (e.g., ..%2F..%2F) in the 'dbq' parameter of requests to newdsn.exe, which allow writing files outside the intended directory. ↗
• → Alert on any request to newdsn.exe where the 'dbq' parameter specifies a non-.mdb extension (e.g., .html, .asp), indicating attempted arbitrary file creation. ↗

• · newdsn.exe is installed by default and must be explicitly removed to mitigate the vulnerability; its mere presence on the server is a risk indicator. ↗

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