CVE-2011-0657: Input Validation
First published: Wed Apr 13 2011(Updated: )
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."
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows Server 2003 | =sp2 | |
| Microsoft Windows 7 | ||
| Microsoft Windows 7 | =sp1 | |
| Microsoft Windows 7 | =sp1 | |
| Microsoft Windows Server | =sp2 | |
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | =sp2 | |
| Microsoft Windows Server | =sp2 | |
| Microsoft Windows Server | =sp2 | |
| Microsoft Windows Server | =r2 | |
| Microsoft Windows Server | =r2 | |
| Microsoft Windows Vista | =sp1 | |
| Microsoft Windows Vista | =sp2 | |
| Microsoft Windows XP | =sp2 | |
| Microsoft Windows XP | =sp3 | |
| Microsoft Windows XP | =sp2 | |
| Microsoft Windows Vista | =sp2 | |
| Microsoft Windows Vista | =sp1 |
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Reference Links
- http://osvdb.org/71780
- http://www.vupen.com/english/advisories/2011/0948
- http://www.securityfocus.com/bid/47242
- http://www.securitytracker.com/id?1025332
- http://secunia.com/advisories/44161
- http://www.us-cert.gov/cas/techalerts/TA11-102A.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11902
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-030
Frequently Asked Questions
What is the severity of CVE-2011-0657?
CVE-2011-0657 has a maximum severity rating allowing for remote code execution.
How do I fix CVE-2011-0657?
Updating affected systems to the latest supported version of Windows or applying the recommended security patches will mitigate CVE-2011-0657.
Which systems are affected by CVE-2011-0657?
CVE-2011-0657 affects Microsoft Windows XP SP2 and SP3, Windows Vista, Windows 7, and various versions of Windows Server 2003 and 2008.
What type of vulnerability is CVE-2011-0657?
CVE-2011-0657 is a remote code execution vulnerability stemming from improper processing of DNS queries.
Can CVE-2011-0657 be exploited without user interaction?
Yes, CVE-2011-0657 can be exploited by an attacker sending specially crafted DNS queries to an affected system without requiring user interaction.
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