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Category:   OS (Microsoft)  >   Windows DLL (Any) Vendors:   Microsoft
Windows DNSAPI, FTP, and Other Services Let Remote and Local Users Deny Service
SecurityTracker Alert ID:  1041262
SecurityTracker URL:
CVE Reference:   CVE-2018-8206, CVE-2018-8304, CVE-2018-8309   (Links to External Site)
Date:  Jul 10 2018
Impact:   Denial of service via local system, Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7 SP1, 2008 R2 SP1, 2008 SP2, 2012, 2012 R2, 8.1, RT 8.1, 2016, 10, 10 Version 1607, 10 Version 1703, 10 Version 1709, 10 Version 1803
Description:   Several vulnerabilities were reported in several Microsoft Windows services. A remote or local user can cause denial of service conditions on the target system.

A remote user can send specially crafted packets to the target FTP Server on TCP port 21 to cause the target system to stop responding [CVE-2018-8206].

A remote DNS server can return specially crafted DNS responses to the target system to trigger a flaw in the Windows Domain Name System (DNS) ('DNSAPI.dll') and prevent users from accessing system resources [CVE-2018-8304].

A local user can run a specially crafted application to trigger an object memory handling error and cause the target system to stop responding [CVE-2018-8309].

Brandon Falk (@gamozolabs) of the Enterprise Team, Nick Freeman, and Axel Souchet (@0vercl0k) of MSRC Vulnerabilities and Mitigations Team reported these vulnerabilities.

Impact:   A remote or local user can cause the target system to stop responding.

A remote user can prevent users from accessing system resources.

Solution:   The vendor has issued a fix.

The Microsoft advisories are available at:

Vendor URL: (Links to External Site)
Cause:   State error

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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