Vulnerabilities > CVE-2012-1870 - Information Exposure vulnerability in Microsoft products

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

Summary

The CBC mode in the TLS protocol, as used in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, and other products, allows remote web servers to obtain plaintext data by triggering multiple requests to a third-party HTTPS server and sniffing the network during the resulting HTTPS session, aka "TLS Protocol 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_idMS12-049
bulletin_url
date2012-07-10T00:00:00
impactInformation Disclosure
knowledgebase_id2655992
knowledgebase_url
severityImportant
titleVulnerability in TLS Could Allow Information Disclosure

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS12-049.NASL
descriptionA design flaw in the CBC mode of operation on the TLS protocol can allow encrypted TLS traffic to be decrypted. This vulnerability could allow for the decryption of HTTPS traffic by an unauthorized third party.
last seen2020-06-01
modified2020-06-02
plugin id59912
published2012-07-11
reporterThis script is Copyright (C) 2012-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/59912
titleMS12-049: Vulnerability in TLS Could Allow Information Disclosure (2655992)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(59912);
  script_version("1.11");
  script_cvs_date("Date: 2018/11/15 20:50:31");

  script_cve_id("CVE-2012-1870");
  script_bugtraq_id(54304);
  script_xref(name:"MSFT", value:"MS12-049");
  script_xref(name:"IAVA", value:"2012-A-0108");
  script_xref(name:"MSKB", value:"2655992");

  script_name(english:"MS12-049: Vulnerability in TLS Could Allow Information Disclosure (2655992)");
  script_summary(english:"Checks version of Schannel.dll");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Windows host has an information disclosure vulnerability."
  );
  script_set_attribute(
    attribute:"description",
    value:
"A design flaw in the CBC mode of operation on the TLS protocol can
allow encrypted TLS traffic to be decrypted.  This vulnerability could
allow for the decryption of HTTPS traffic by an unauthorized third
party."
  );
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2012/ms12-049");
  script_set_attribute(
    attribute:"solution",
    value:
"Microsoft has released a set of patches for Windows XP, 2003, Vista,
2008, 7, and 2008 R2."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  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:"2012/07/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/07/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/07/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2012-2018 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_hotfixes_fcheck.inc");
include("smb_hotfixes.inc");
include("smb_func.inc");
include("misc_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

kb = "2655992";
bulletin = 'MS12-049';
kbs = make_list(kb);

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);

if (
  # Windows 7 / Server 2008 R2
  hotfix_is_vulnerable(os:"6.1", sp:0, file:"Schannel.dll", version:"6.1.7600.17035", min_version:"6.1.7600.16000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.1", sp:0, file:"Schannel.dll", version:"6.1.7600.21225", min_version:"6.1.7600.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"Schannel.dll", version:"6.1.7601.17856", min_version:"6.1.7601.17000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"Schannel.dll", version:"6.1.7601.22010", min_version:"6.1.7601.21000", dir:"\system32", bulletin:bulletin, kb:kb) ||

  # Vista / Windows Server 2008
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"Schannel.dll", version:"6.0.6002.18643", min_version:"6.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"Schannel.dll", version:"6.0.6002.22869", min_version:"6.0.6002.22000", dir:"\system32", bulletin:bulletin, kb:kb) ||

  # Windows 2003 and XP x64
  hotfix_is_vulnerable(os:"5.2", sp:2, file:"Schannel.dll", version:"5.2.3790.5014", dir:"\System32", bulletin:bulletin, kb:kb) ||

  # Windows XP
  hotfix_is_vulnerable(os:"5.1", sp:3, file:"Schannel.dll", version:"5.1.2600.6239", dir:"\System32", bulletin:bulletin, kb:kb)
)
{
  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

accepted2013-05-06T04:01:35.377-04:00
classvulnerability
contributors
  • nameSecPod Team
    organizationSecPod Technologies
  • nameSharath S
    organizationSecPod Technologies
definition_extensions
  • commentMicrosoft Windows XP (x86) SP3 is installed
    ovaloval:org.mitre.oval:def:5631
  • commentMicrosoft Windows XP x64 Edition SP2 is installed
    ovaloval:org.mitre.oval:def:4193
  • commentMicrosoft Windows Server 2003 (ia64) SP2 is installed
    ovaloval:org.mitre.oval:def:1442
  • commentMicrosoft Windows Server 2003 SP2 (x64) is installed
    ovaloval:org.mitre.oval:def:2161
  • commentMicrosoft Windows Server 2003 SP2 (x86) is installed
    ovaloval:org.mitre.oval:def:1935
  • commentMicrosoft Windows Vista x64 Edition Service Pack 2 is installed
    ovaloval:org.mitre.oval:def:5594
  • commentMicrosoft Windows Vista (32-bit) Service Pack 2 is installed
    ovaloval:org.mitre.oval:def:6124
  • commentMicrosoft Windows Server 2008 x64 Edition Service Pack 2 is installed
    ovaloval:org.mitre.oval:def:6216
  • commentMicrosoft Windows Server 2008 Itanium-Based Edition Service Pack 2 is installed
    ovaloval:org.mitre.oval:def:6150
  • commentMicrosoft Windows Server 2008 (32-bit) Service Pack 2 is installed
    ovaloval:org.mitre.oval:def:5653
  • commentMicrosoft Windows 7 is installed
    ovaloval:org.mitre.oval:def:12541
  • commentMicrosoft Windows Server 2008 R2 Itanium-Based Edition is installed
    ovaloval:org.mitre.oval:def:5954
  • commentMicrosoft Windows Server 2008 R2 x64 Edition is installed
    ovaloval:org.mitre.oval:def:6438
  • commentMicrosoft Windows 7 (32-bit) Service Pack 1 is installed
    ovaloval:org.mitre.oval:def:12292
  • commentMicrosoft Windows 7 x64 Service Pack 1 is installed
    ovaloval:org.mitre.oval:def:12627
  • commentMicrosoft Windows Server 2008 R2 Itanium-Based Edition Service Pack 1 is installed
    ovaloval:org.mitre.oval:def:12583
  • commentMicrosoft Windows Server 2008 R2 x64 Service Pack 1 is installed
    ovaloval:org.mitre.oval:def:12567
descriptionThe CBC mode in the TLS protocol, as used in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, and other products, allows remote web servers to obtain plaintext data by triggering multiple requests to a third-party HTTPS server and sniffing the network during the resulting HTTPS session, aka "TLS Protocol Vulnerability."
familywindows
idoval:org.mitre.oval:def:15644
statusaccepted
submitted2012-07-13T15:37:17
titleTLS Protocol Vulnerability - MS12-049
version74