Vulnerability Name:

CVE-2012-4776 (CCN-79691)

Assigned:2012-11-13
Published:2012-11-13
Updated:2020-09-28
Summary:The 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."
CVSS v3 Severity:10.0 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:9.3 High (CVSS v2 Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C)
6.9 Medium (Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
9.3 High (CCN CVSS v2 Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C)
6.9 Medium (CCN Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-20
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2012-4776

Source: OSVDB
Type: UNKNOWN
87266

Source: CCN
Type: SA51236
Microsoft .NET Framework Multiple Vulnerabilities

Source: SECUNIA
Type: UNKNOWN
51236

Source: CCN
Type: Microsoft Security Bulletin MS12-074
Vulnerabilities in .NET Framework Could Allow Remote Code Execution (2745030)

Source: CCN
Type: Microsoft Security Bulletin MS13-004
Vulnerability in .NET Framework Could Allow Elevation of Privilege (2769324)

Source: CCN
Type: OSVDB ID: 87266
Microsoft .NET Framework Web Proxy Setting Auto-Discovery (WPAD) Handling Remote Code Execution

Source: BID
Type: UNKNOWN
56463

Source: CCN
Type: BID-56463
Microsoft .NET Framework CVE-2012-4776 Remote Code Execution Vulnerability

Source: SECTRACK
Type: UNKNOWN
1027753

Source: CERT
Type: US Government Resource
TA12-318A

Source: MS
Type: UNKNOWN
MS12-074

Source: XF
Type: UNKNOWN
dotnet-web-proxy-code-exec(79691)

Source: OVAL
Type: UNKNOWN
oval:org.mitre.oval:def:15810

Vulnerable Configuration:Configuration 1:
  • cpe:/a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:itanium:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2008:*:*:*:*:*:*:x32:*
  • OR cpe:/o:microsoft:windows_vista:*:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_vista:*:sp2:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_xp:*:sp3:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_7:*:*:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:*:*:x86:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:*:sp1:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:*:sp1:x86:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:r2:itanium:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:r2:x64:*:*:*:*:*

    • Configuration 3:
  • cpe:/a:microsoft:.net_framework:4.0:-:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_7:*:*:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:*:*:x86:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:*:sp1:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:*:sp1:x86:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:r2:itanium:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:r2:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:itanium:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_vista:*:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_vista:*:sp2:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_xp:*:sp3:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:*

    • Configuration 4:
  • cpe:/a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_8:-:*:*:*:pro_n:*:x64:*
  • OR cpe:/o:microsoft:windows_8:-:*:*:*:pro_n:*:x86:*
  • OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/a:microsoft:.net_framework:4.5:*:*:*:*:*:*:*
  • AND
  • cpe:/o:microsoft:windows_7:*:sp1:x64:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_7:*:sp1:x86:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x64:*
  • OR cpe:/o:microsoft:windows_server_2008:*:*:*:*:*:*:x32:*
  • OR cpe:/o:microsoft:windows_vista:*:sp2:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_vista:*:sp2:x64:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.0:-:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_framework:4.5:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.mitre.oval:def:15810
    V
    		Web proxy auto-discovery vulnerability - MS12-074
    2014-08-18
    BACK
    microsoft .net framework 2.0 sp2
    microsoft windows server 2003 * sp2
    microsoft windows server 2008 * sp2
    microsoft windows server 2008 * sp2
    microsoft windows server 2008 * sp2
    microsoft windows vista * sp2
    microsoft windows vista * sp2
    microsoft windows xp * sp3
    microsoft windows xp - sp2
    microsoft .net framework 3.5.1
    microsoft windows 7 *
    microsoft windows 7 *
    microsoft windows 7 * sp1
    microsoft windows 7 * sp1
    microsoft windows server 2008 * r2
    microsoft windows server 2008 * r2
    microsoft .net framework 4.0
    microsoft windows 7 *
    microsoft windows 7 *
    microsoft windows 7 * sp1
    microsoft windows 7 * sp1
    microsoft windows server 2003 * sp2
    microsoft windows server 2008 * r2
    microsoft windows server 2008 * r2
    microsoft windows server 2008 * sp2
    microsoft windows server 2008 * sp2
    microsoft windows vista * sp2
    microsoft windows vista * sp2
    microsoft windows xp * sp3
    microsoft windows xp - sp2
    microsoft .net framework 3.5
    microsoft windows 8 - -
    microsoft windows 8 - -
    microsoft windows server 2012 -
    microsoft .net framework 4.5
    microsoft windows 7 * sp1
    microsoft windows 7 * sp1
    microsoft windows server 2008 * sp2
    microsoft windows server 2008 * sp2
    microsoft windows vista * sp2
    microsoft windows vista * sp2
    microsoft .net framework 2.0 sp2
    microsoft .net framework 3.5
    microsoft .net framework 3.5.1
    microsoft .net framework 4.0
    microsoft .net framework 4.5