CVE-2012-4776

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Summary

CVECVE-2012-4776
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2012-11-14 00:55:01 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe Web Proxy Auto-Discovery (WPAD) functionality in Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, and 4.5 does not validate configuration data that is returned during acquisition of proxy settings, which allows remote attackers to execute arbitrary JavaScript code by providing crafted data during execution of (1) an XAML browser application (aka XBAP) or (2) a .NET Framework application, aka "Web Proxy Auto-Discovery Vulnerability."

Risk And Classification

Primary CVSS: v2.0 9.3 from [email protected]

AV:N/AC:M/Au:N/C:C/I:C/A:C

Problem Types: CWE-20 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Microsoft .net Framework 2.0 sp2 All All
Application Microsoft .net Framework 3.5.1 All All All
Application Microsoft .net Framework 4.0 All All All
Operating System Microsoft Windows 7 All All x64 All
Operating System Microsoft Windows 7 All All x86 All
Operating System Microsoft Windows 7 All sp1 x64 All
Operating System Microsoft Windows 7 All sp1 x86 All
Operating System Microsoft Windows Server 2003 All sp2 All All
Operating System Microsoft Windows Server 2008 All r2 itanium All
Operating System Microsoft Windows Server 2008 All r2 x64 All
Operating System Microsoft Windows Server 2008 All sp2 itanium All
Operating System Microsoft Windows Server 2008 All sp2 x64 All
Operating System Microsoft Windows Server 2008 All sp2 x86 All
Operating System Microsoft Windows Vista All sp2 All All
Operating System Microsoft Windows Xp All sp3 All All
Operating System Microsoft Windows Xp - sp2 x64 All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
US-CERT Alert TA12-318A - Microsoft Updates for Multiple Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.us-cert.gov US Government Resource
Microsoft Security Bulletin MS12-074 - Critical | Microsoft Docs af854a3a-2127-422b-91ae-364da2661108 docs.microsoft.com
Microsoft .NET Flaws Let Remote Users Execute Arbitrary Code, Obtain Potentially Sensitive Information, and Bypass Security Restrictions - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Repository / Oval Repository af854a3a-2127-422b-91ae-364da2661108 oval.cisecurity.org
Microsoft .NET Framework CVE-2012-4776 Remote Code Execution Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
osvdb.org/87266 af854a3a-2127-422b-91ae-364da2661108 osvdb.org
About Secunia Research | Flexera af854a3a-2127-422b-91ae-364da2661108 secunia.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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