CVE-2011-0657

CRITICAL

Microsoft Windows 2003 Server - Improper Input Validation

Title source: rule

Description

DNSAPI.dll in the DNS client in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly process DNS queries, which allows remote attackers to execute arbitrary code via (1) a crafted LLMNR broadcast query or (2) a crafted application, aka "DNS Query Vulnerability."

Exploits (1)

metasploit WORKING POC

rubypoc

https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/dos/windows/llmnr/ms11_030_dnsapi.rb

View Code ZIP pw:eip

References (8)

[Third Party Advisory, VDB Entry] http://osvdb.org/71780

[US Government Resource] http://www.us-cert.gov/cas/techalerts/TA11-102A.html

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/47242

[Vendor Advisory] https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-030

[Third Party Advisory, VDB Entry] https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11902

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id?1025332

[Third Party Advisory] http://secunia.com/advisories/44161

[Third Party Advisory] http://www.vupen.com/english/advisories/2011/0948

Scores

CVSS v3 9.8

EPSS 0.4693

EPSS Percentile 97.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-20

Status published

Products (7)

microsoft/windows_2003_server

microsoft/windows_7 (3 CPE variants)

microsoft/windows_server_2003

microsoft/windows_server_2008 (6 CPE variants)

microsoft/windows_server_2008 r2 (2 CPE variants)

microsoft/windows_vista (2 CPE variants)

microsoft/windows_xp (3 CPE variants)

Published Apr 13, 2011

Tracked Since Feb 18, 2026