PT-1999-1568 · Microsoft · Internet Explorer

Published 1999-12-31 · Updated 2021-07-22 · CVE-1999-1087

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Internet Explorer version 4

Description The issue allows remote malicious web servers to conduct unauthorized activities by using URLs that contain a dotless IP address for their server. This occurs because Internet Explorer 4 treats a 32-bit number in a URL as the hostname instead of an IP address, causing it to apply Local Intranet Zone settings to the resulting web page.

Recommendations For Internet Explorer version 4, consider avoiding the use of dotless IP addresses in URLs until a fix is available. As a temporary workaround, restrict access to potentially malicious web servers to minimize the risk of exploitation.

Fix

Related Identifiers

CVE-1999-1087

Affected Products

Internet Explorer

References · 6

• http://support.microsoft.com/support/kb/articles/q168/6/17.asp · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-1999-1087 · Security Note
• http://microsoft.com/Windows/Ie/security/dotless.asp · Note
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/1998/ms98-016 · Note
• http://osvdb.org/7828 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/2209 · Note