Vulnerabilities > CVE-2011-1978 - Information Exposure vulnerability in Microsoft .Net Framework 2.0/3.5.1/4.0

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN

Summary

Microsoft .NET Framework 2.0 SP2, 3.5.1, and 4 does not properly validate the System.Net.Sockets trust level, which allows remote attackers to obtain sensitive information or trigger arbitrary outbound network traffic via (1) a crafted XAML browser application (aka XBAP), (2) a crafted ASP.NET application, or (3) a crafted .NET Framework application, aka "Socket Restriction Bypass Vulnerability."

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Msbulletin

bulletin_idMS11-069
bulletin_url
date2011-08-09T00:00:00
impactInformation Disclosure
knowledgebase_id2567951
knowledgebase_url
severityModerate
titleVulnerability in .NET Framework Could Allow Information Disclosure

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS11-069.NASL
descriptionThe remote Windows host is running a version of the Microsoft .NET Framework that improperly validates the trust level within the System.Net.Sockets namespace. A remote attacker could exploit this issue by tricking a user into viewing a specially crafted XML file, resulting in information disclosure or partial denial of service.
last seen2020-06-01
modified2020-06-02
plugin id55799
published2011-08-09
reporterThis script is Copyright (C) 2011-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/55799
titleMS11-069: Vulnerability in .NET Framework Could Allow Information Disclosure (2567951)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(55799);
  script_version("1.14");
  script_cvs_date("Date: 2018/11/15 20:50:31");

  script_cve_id("CVE-2011-1978");
  script_bugtraq_id(48991);
  script_xref(name:"MSFT", value:"MS11-069");
  script_xref(name:"MSKB", value:"2539631");
  script_xref(name:"MSKB", value:"2539633");
  script_xref(name:"MSKB", value:"2539634");
  script_xref(name:"MSKB", value:"2539635");
  script_xref(name:"MSKB", value:"2539636");

  script_name(english:"MS11-069: Vulnerability in .NET Framework Could Allow Information Disclosure (2567951)");
  script_summary(english:"Checks version of system.dll");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft .NET Framework install on the remote host is affected by
an improper validation vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is running a version of the Microsoft .NET
Framework that improperly validates the trust level within the
System.Net.Sockets namespace.  A remote attacker could exploit this
issue by tricking a user into viewing a specially crafted XML file,
resulting in information disclosure or partial denial of service.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2011/ms11-069");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for .NET Framework 2.0,
3.5.1, and 4.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2011/08/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/08/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/08/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:.net_framework");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2011-2018 Tenable Network Security, Inc.");

  script_dependencies("smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, 'Host/patch_management_checks');

  exit(0);
}

include("audit.inc");
include("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("misc_func.inc");


get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS11-069';
kbs = make_list("2539631", "2539633", "2539634", "2539635", "2539636");
if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_WARNING);

get_kb_item_or_exit("SMB/Registry/Enumerated");
get_kb_item_or_exit("SMB/WindowsVersion", exit_code:1);

if (hotfix_check_sp_range(xp:'3', win2003:'2', vista:'2', win7:'0,1') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

rootfile = hotfix_get_systemroot();
if (!rootfile) exit(1, "Failed to get the system root.");

share = hotfix_path2share(path:rootfile);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);


vuln = 0;


# .NET Framework 2.0 SP2 on Windows XP SP3 / Server 2003 SP2
missing = 0;
missing += hotfix_is_vulnerable(os:"5.1", sp:3, file:"System.dll", version:"2.0.50727.5668", min_version:"2.0.50727.5000", dir:"\Microsoft.NET\Framework\v2.0.50727");
missing += hotfix_is_vulnerable(os:"5.1", sp:3, file:"System.dll", version:"2.0.50727.3624", min_version:"2.0.50727.3000", dir:"\Microsoft.NET\Framework\v2.0.50727");
missing += hotfix_is_vulnerable(os:"5.2", sp:2, file:"System.dll", version:"2.0.50727.5668", min_version:"2.0.50727.5000", dir:"\Microsoft.NET\Framework\v2.0.50727");
missing += hotfix_is_vulnerable(os:"5.2", sp:2, file:"System.dll", version:"2.0.50727.3624", min_version:"2.0.50727.3000", dir:"\Microsoft.NET\Framework\v2.0.50727");

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"2539631");
vuln += missing;

# .NET Framework 2.0 SP2 on Windows Vista SP2 / Server 2008 SP2
missing = 0;
if (hotfix_check_server_core() != 1)
{
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"System.dll", version:"2.0.50727.5668", min_version:"2.0.50727.5000", dir:"\Microsoft.NET\Framework\v2.0.50727");
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"System.dll", version:"2.0.50727.4215", min_version:"2.0.50727.4000", dir:"\Microsoft.NET\Framework\v2.0.50727");
}

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"2539633");
vuln += missing;

# .NET Framework 3.5.1 on Windows 7 / Server 2008 R2
missing = 0;
missing += hotfix_is_vulnerable(os:"6.1", sp:0, file:"System.dll", version:"2.0.50727.5668", min_version:"2.0.50727.5000", dir:"\Microsoft.NET\Framework\v2.0.50727");
missing += hotfix_is_vulnerable(os:"6.1", sp:0, file:"System.dll", version:"2.0.50727.4962", min_version:"2.0.50727.4000", dir:"\Microsoft.NET\Framework\v2.0.50727");

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"2539634");
vuln += missing;

# .NET Framework 3.5.1 on Windows 7 SP1 / Server 2008 R2 SP1
missing = 0;
missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"System.dll", version:"2.0.50727.5668", min_version:"2.0.50727.5600", dir:"\Microsoft.NET\Framework\v2.0.50727");
missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"System.dll", version:"2.0.50727.5447", min_version:"2.0.50727.5000", dir:"\Microsoft.NET\Framework\v2.0.50727");

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"2539635");
vuln += missing;

# .NET Framework 4 on all supported versions of Windows
missing = 0;
missing += hotfix_is_vulnerable(os:"5.1", file:"System.dll", version:"4.0.30319.236", min_version:"4.0.30319.0",   dir:"\Microsoft.NET\Framework\v4.0.30319");
missing += hotfix_is_vulnerable(os:"5.1", file:"System.dll", version:"4.0.30319.463", min_version:"4.0.30319.400", dir:"\Microsoft.NET\Framework\v4.0.30319");
missing += hotfix_is_vulnerable(os:"5.2", file:"System.dll", version:"4.0.30319.236", min_version:"4.0.30319.0",   dir:"\Microsoft.NET\Framework\v4.0.30319");
missing += hotfix_is_vulnerable(os:"5.2", file:"System.dll", version:"4.0.30319.463", min_version:"4.0.30319.400", dir:"\Microsoft.NET\Framework\v4.0.30319");
if (hotfix_check_server_core() != 1)
{
  missing += hotfix_is_vulnerable(os:"6.0", file:"System.dll", version:"4.0.30319.236", min_version:"4.0.30319.0",   dir:"\Microsoft.NET\Framework\v4.0.30319");
  missing += hotfix_is_vulnerable(os:"6.0", file:"System.dll", version:"4.0.30319.463", min_version:"4.0.30319.400", dir:"\Microsoft.NET\Framework\v4.0.30319");
  missing += hotfix_is_vulnerable(os:"6.1", file:"System.dll", version:"4.0.30319.236", min_version:"4.0.30319.0",   dir:"\Microsoft.NET\Framework\v4.0.30319");
  missing += hotfix_is_vulnerable(os:"6.1", file:"System.dll", version:"4.0.30319.463", min_version:"4.0.30319.400", dir:"\Microsoft.NET\Framework\v4.0.30319");
}

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"2539636");
vuln += missing;

if (vuln > 0)
{
  set_kb_item(name:"SMB/Missing/"+bulletin, value:TRUE);
  hotfix_security_warning();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}

Oval

accepted2014-08-18T04:00:40.542-04:00
classvulnerability
contributors
  • nameJosh Turpin
    organizationSymantec Corporation
  • nameMaria Mikhno
    organizationALTX-SOFT
definition_extensions
  • commentMicrosoft Windows XP (32-bit) is installed
    ovaloval:org.mitre.oval:def:1353
  • commentMicrosoft Windows XP x64 is installed
    ovaloval:org.mitre.oval:def:15247
  • commentMicrosoft Windows Server 2003 (32-bit) is installed
    ovaloval:org.mitre.oval:def:1870
  • commentMicrosoft Windows Server 2003 (x64) is installed
    ovaloval:org.mitre.oval:def:730
  • commentMicrosoft Windows Server 2003 (ia64) Gold is installed
    ovaloval:org.mitre.oval:def:396
  • commentMicrosoft .NET Framework 2.0 Service Pack 2 is installed
    ovaloval:org.mitre.oval:def:6158
  • commentMicrosoft Windows Vista (32-bit) is installed
    ovaloval:org.mitre.oval:def:1282
  • commentMicrosoft Windows Vista x64 Edition is installed
    ovaloval:org.mitre.oval:def:2041
  • commentMicrosoft Windows Server 2008 (32-bit) is installed
    ovaloval:org.mitre.oval:def:4870
  • commentMicrosoft Windows Server 2008 (64-bit) is installed
    ovaloval:org.mitre.oval:def:5356
  • commentMicrosoft Windows Server 2008 (ia-64) is installed
    ovaloval:org.mitre.oval:def:5667
  • commentMicrosoft .NET Framework 2.0 Service Pack 2 is installed
    ovaloval:org.mitre.oval:def:6158
  • commentMicrosoft Windows 7 (32-bit) is installed
    ovaloval:org.mitre.oval:def:6165
  • commentMicrosoft Windows 7 x64 Edition is installed
    ovaloval:org.mitre.oval:def:5950
  • commentMicrosoft Windows Server 2008 R2 x64 Edition is installed
    ovaloval:org.mitre.oval:def:6438
  • commentMicrosoft Windows Server 2008 R2 Itanium-Based Edition is installed
    ovaloval:org.mitre.oval:def:5954
  • commentMicrosoft .NET Framework 3.5 SP1 is installed
    ovaloval:org.mitre.oval:def:12542
  • commentMicrosoft Windows 7 (32-bit) is installed
    ovaloval:org.mitre.oval:def:6165
  • commentMicrosoft Windows 7 x64 Edition is installed
    ovaloval:org.mitre.oval:def:5950
  • commentMicrosoft Windows Server 2008 R2 x64 Edition is installed
    ovaloval:org.mitre.oval:def:6438
  • commentMicrosoft Windows Server 2008 R2 Itanium-Based Edition is installed
    ovaloval:org.mitre.oval:def:5954
  • commentMicrosoft .NET Framework 3.5 SP1 is installed
    ovaloval:org.mitre.oval:def:12542
  • commentMicrosoft Windows XP (32-bit) is installed
    ovaloval:org.mitre.oval:def:1353
  • commentMicrosoft Windows XP x64 is installed
    ovaloval:org.mitre.oval:def:15247
  • commentMicrosoft Windows Server 2003 (32-bit) is installed
    ovaloval:org.mitre.oval:def:1870
  • commentMicrosoft Windows Server 2003 (x64) is installed
    ovaloval:org.mitre.oval:def:730
  • commentMicrosoft Windows Server 2003 (ia64) Gold is installed
    ovaloval:org.mitre.oval:def:396
  • commentMicrosoft Windows Vista (32-bit) is installed
    ovaloval:org.mitre.oval:def:1282
  • commentMicrosoft Windows Vista x64 Edition is installed
    ovaloval:org.mitre.oval:def:2041
  • commentMicrosoft Windows Server 2008 (32-bit) is installed
    ovaloval:org.mitre.oval:def:4870
  • commentMicrosoft Windows Server 2008 (64-bit) is installed
    ovaloval:org.mitre.oval:def:5356
  • commentMicrosoft Windows Server 2008 (ia-64) is installed
    ovaloval:org.mitre.oval:def:5667
  • commentMicrosoft Windows 7 (32-bit) is installed
    ovaloval:org.mitre.oval:def:6165
  • commentMicrosoft Windows 7 x64 Edition is installed
    ovaloval:org.mitre.oval:def:5950
  • commentMicrosoft Windows Server 2008 R2 x64 Edition is installed
    ovaloval:org.mitre.oval:def:6438
  • commentMicrosoft Windows Server 2008 R2 Itanium-Based Edition is installed
    ovaloval:org.mitre.oval:def:5954
  • commentMicrosoft .NET Framework 4.0 is installed
    ovaloval:org.mitre.oval:def:6749
descriptionMicrosoft .NET Framework 2.0 SP2, 3.5.1, and 4 does not properly validate the System.Net.Sockets trust level, which allows remote attackers to obtain sensitive information or trigger arbitrary outbound network traffic via (1) a crafted XAML browser application (aka XBAP), (2) a crafted ASP.NET application, or (3) a crafted .NET Framework application, aka "Socket Restriction Bypass Vulnerability."
familywindows
idoval:org.mitre.oval:def:12901
statusaccepted
submitted2011-08-09T13:00:00
titleSocket Restriction Bypass Vulnerability
version42