CVE-1999-1233

High

Description

IIS 4.0 does not properly restrict access for the initial session request from a user's IP address if the address does not resolve to a DNS domain, aka the "Domain Resolution" vulnerability.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Microsoft Internet Information Server

PublishedDec 31, 1999

First seenDec 31, 1999

How to fix

Vendor advisories

docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-039

Affected products

Product	Affected versions	Fixed in
microsoft internet_information_server	4.0	—

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