Vulnerabilities > CVE-2010-2566 - Improper Input Validation vulnerability in Microsoft products

047910
CVSS 9.3 - CRITICAL
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
microsoft
CWE-20
critical
nessus
NVD
Published: 2010-08-11
Updated: 2019-02-26

Summary

The Secure Channel (aka SChannel) security package in Microsoft Windows XP SP2 and SP3, and Windows Server 2003 SP2, does not properly validate certificate request messages from TLS and SSL servers, which allows remote servers to execute arbitrary code via a crafted SSL response, aka "SChannel Malformed Certificate Request Remote Code Execution Vulnerability."

Vulnerable Configurations

Part Description Count
OS
Microsoft
5

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Msbulletin

bulletin_idMS10-049
bulletin_url
date2010-08-10T00:00:00
impactRemote Code Execution
knowledgebase_id980436
knowledgebase_url
severityCritical
titleVulnerabilities in SChannel could allow Remote Code Execution

Nessus

  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS10-049.NASL
    descriptionThe remote Windows host is running a version of the Secure Channel (SChannel) security package that is affected by one or more of the following vulnerabilities : - The SChannel authentication component allows a client to renegotiate the connection after the initial handshake, which could be abused to inject information into an encrypted connection, effectively sending traffic spoofing an authenticated client. (CVE-2009-3555) - The way that SChannel validates a certificate request message sent by a server could lead to a denial of service or even allow execution of arbitrary code if an attacker can trick a user on the affected system into connecting to malicious web server over SSL or TLS. (CVE-2010-2566)
    last seen2020-06-01
    modified2020-06-02
    plugin id48286
    published2010-08-11
    reporterThis script is Copyright (C) 2010-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/48286
    titleMS10-049: Vulnerabilities in SChannel could allow Remote Code Execution (980436)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(48286);
  script_version("1.21");
  script_cvs_date("Date: 2018/11/15 20:50:30");

  script_cve_id("CVE-2009-3555", "CVE-2010-2566");
  script_bugtraq_id(36935, 42246);
  script_xref(name:"MSFT", value:"MS10-049");
  script_xref(name:"MSKB", value:"980436");

  script_name(english:"MS10-049: Vulnerabilities in SChannel could allow Remote Code Execution (980436)");
  script_summary(english:"Checks version of Schannel.dll");

  script_set_attribute(attribute:"synopsis", value:
"It may be possible to execute arbitrary code on the remote Windows
host using the Secure Channel security package.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is running a version of the Secure Channel
(SChannel) security package that is affected by one or more of the
following vulnerabilities :

  - The SChannel authentication component allows a client to
    renegotiate the connection after the initial handshake,
    which could be abused to inject information into an encrypted
    connection, effectively sending traffic spoofing an
    authenticated client. (CVE-2009-3555)

  - The way that SChannel validates a certificate request message
    sent by a server could lead to a denial of service or even allow
    execution of arbitrary code if an attacker can trick a user on
    the affected system into connecting to malicious web server over
   SSL or TLS. (CVE-2010-2566)");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2010/ms10-049");
  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:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(310);

  script_set_attribute(attribute:"vuln_publication_date", value:"2009/11/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2010/08/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/08/11");

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

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

  script_copyright(english:"This script is Copyright (C) 2010-2018 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");

bulletin = 'MS10-049';
kbs = make_list("980436");
if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

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:'1,2', win7:'0') <= 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);

kb = '980436';
if (
  # Windows 7 / Server 2008 R2
  hotfix_is_vulnerable(os:"6.1", sp:0,             file:"Schannel.dll", version:"6.1.7600.20735", min_version:"6.1.7600.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.1", sp:0,             file:"Schannel.dll", version:"6.1.7600.16612", min_version:"6.1.7600.16000", dir:"\system32", bulletin:bulletin, kb:kb) ||

  # Vista / Windows Server 2008
  hotfix_is_vulnerable(os:"6.0", sp:2,             file:"Schannel.dll", version:"6.0.6002.22422", min_version:"6.0.6002.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:2,             file:"Schannel.dll", version:"6.0.6002.18269", min_version:"6.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:1,             file:"Schannel.dll", version:"6.0.6001.22709", min_version:"6.0.6001.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:1,             file:"Schannel.dll", version:"6.0.6001.18490", min_version:"6.0.6001.18000", dir:"\system32", bulletin:bulletin, kb:kb) ||

  # Windows 2003
  hotfix_is_vulnerable(os:"5.2", sp:2,             file:"Schannel.dll", version:"5.2.3790.4724", dir:"\System32", bulletin:bulletin, kb:kb) ||

  # Windows XP
  hotfix_is_vulnerable(os:"5.1", sp:3, arch:"x86", file:"Schannel.dll", version:"5.1.2600.6006", dir:"\System32", bulletin:bulletin, kb:kb)
)
{
  set_kb_item(name:"SMB/Missing/MS10-049", value:TRUE);
  hotfix_security_hole();

  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}
  • NASL familyWeb Servers
    NASL idIIS_7_PCI.NASL
    descriptionAccording to the HTTP server banner the remote server is IIS 7.0. The server may be vulnerable to a number of vulnerabilities including a couple of remote code execution vulnerabilities.
    last seen2020-06-01
    modified2020-06-02
    plugin id108808
    published2018-04-03
    reporterThis script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/108808
    titleMicrosoft IIS 7.0 Vulnerabilities (uncredentialed) (PCI/DSS)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if(description)
{
  script_id(108808);
  script_version ("1.6");
  script_cvs_date("Date: 2018/07/13 15:08:46");

  script_cve_id(
    "CVE-2008-1446",
    "CVE-2009-3555",
    "CVE-2010-1256",
    "CVE-2010-1899",
    "CVE-2010-2566",
    "CVE-2010-2730",
    "CVE-2010-2731"
  );
  script_bugtraq_id(
    31682,
    36935,
    40573,
    42246,
    41314,
    43138,
    43140
  );
  script_xref(name:"MSFT", value:"MS08-062");
  script_xref(name:"MSFT", value:"MS10-040");
  script_xref(name:"MSFT", value:"MS10-049");
  script_xref(name:"MSFT", value:"MS10-065");
  script_xref(name:"MSKB", value:"953155");
  script_xref(name:"MSKB", value:"2124261");
  script_xref(name:"MSKB", value:"2271195");
  script_xref(name:"MSKB", value:"2290570");
  script_xref(name:"MSKB", value:"982666");
  script_xref(name:"MSKB", value:"973917");
  script_xref(name:"MSKB", value:"980436");
  script_xref(name:"IAVA", value:"2010-A-0120");
  script_xref(name:"IAVB", value:"2010-B-0045");
  script_xref(name:"IAVB", value:"2008-B-0075");

  script_name(english:"Microsoft IIS 7.0 Vulnerabilities (uncredentialed) (PCI/DSS)");
  script_summary(english: "Checks the web server banner.");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server may allow remote code execution.");
  script_set_attribute(attribute:"description", value:
"According to the HTTP server banner the remote server is
IIS 7.0. The server may be vulnerable to a number of
vulnerabilities including a couple of remote code execution
vulnerabilities.");
  script_set_attribute(attribute:"solution", value:
"Ensure the appropriate patches have been applied.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');
  script_cwe_id(189, 310);

  script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/03");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:iis");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Web Servers");

  script_dependencies("http_version.nasl");
  script_require_keys("www/iis", "Settings/ParanoidReport", "Settings/PCI_DSS");
  script_require_ports("Services/www", 80);
  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("http.inc");
include("misc_func.inc");

if (!get_kb_item("Settings/PCI_DSS"))
{
  audit(AUDIT_PCI);
}

if (report_paranoia < 2)
{
  audit(AUDIT_PARANOID);
}

get_kb_item_or_exit("www/iis");

app = "Microsoft IIS";
port = get_http_port(default:80);
banner = get_http_banner(port:port);
if (empty_or_null(banner) || "Server: Microsoft-IIS" >!< banner)
{
  audit(AUDIT_NOT_DETECT, app, port);
}

if ("Server: Microsoft-IIS/7.0" >!< banner)
{
  audit(AUDIT_LISTEN_NOT_VULN, app, port);
}

security_report_v4(severity:SECURITY_HOLE, port:port);
exit(0);

Oval

accepted2010-09-27T04:00:12.130-04:00
classvulnerability
contributors
nameDragos Prisaca
organizationSymantec Corporation
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 SP2 (x86) is installed
    ovaloval:org.mitre.oval:def:1935
  • commentMicrosoft Windows Server 2003 SP2 (x64) is installed
    ovaloval:org.mitre.oval:def:2161
  • commentMicrosoft Windows Server 2003 (ia64) SP2 is installed
    ovaloval:org.mitre.oval:def:1442
descriptionThe Secure Channel (aka SChannel) security package in Microsoft Windows XP SP2 and SP3, and Windows Server 2003 SP2, does not properly validate certificate request messages from TLS and SSL servers, which allows remote servers to execute arbitrary code via a crafted SSL response, aka "SChannel Malformed Certificate Request Remote Code Execution Vulnerability."
familywindows
idoval:org.mitre.oval:def:11787
statusaccepted
submitted2010-08-10T13:00:00
titleSChannel Malformed Certificate Request Remote Code Execution Vulnerability
version71

References