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vulnerability note CVE-2006-5614

Windows: denial of service of Internet Connection Sharing

Synthesis of the vulnerability

An attacker on the internal network can generate a denial of service on the computer with Internet Connection Sharing.
Vulnerable products: Windows 98, Windows ME, Windows XP.
Severity of this weakness: 1/4.
Consequences of an attack: denial of service on service.
Hacker's origin: intranet client.
Creation date: 30/10/2006.
Références of this bulletin: BID-20804, CVE-2006-5614, VIGILANCE-VUL-6264.

Description of the vulnerability

When a computer provides Internet Connection Sharing (ICS), it is connected to internet, and computers on the internal network use it as a proxy.

However, the ICS service of Windows does not correctly manage DNS queries with no Resource Record. This error occurs in ipnathlp.dll and stops svchost.exe.

An attacker on the internal network can therefore generate a denial of service.
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