Vulnerabilities > CVE-2002-0049 - Improper Privilege Management vulnerability in Microsoft Exchange Server 2000

047910
CVSS 6.4 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
NONE
network
low complexity
microsoft
CWE-269
nessus
NVD
Published: 2002-03-08
Updated: 2020-04-02

Summary

Microsoft Exchange Server 2000 System Attendant gives "Everyone" group privileges to the WinReg key, which could allow remote attackers to read or modify registry keys.

Vulnerable Configurations

Part Description Count
Application
Microsoft
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS02-003.NASL
descriptionThe key HKLM\SYSTEM\CurrentControlSet\Control\SecurePipeServers\winreg is writeable by non-administrators. The installation software of Microsoft Exchange sets this key to a world-writeable mode. Local users could use this misconfiguration to escalate their privileges on this host.
last seen2020-06-01
modified2020-06-02
plugin id11309
published2003-03-02
reporterThis script is Copyright (C) 2003-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/11309
titleMS02-003: WinReg Remote Registry Key Manipulation (316056)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
 script_id(11309);
 script_version("1.40");
 script_cvs_date("Date: 2018/11/15 20:50:29");

 script_cve_id("CVE-2002-0049");
 script_bugtraq_id(4053);
 script_xref(name:"CERT", value:"978131");
 script_xref(name:"MSFT", value:"MS02-003");
 script_xref(name:"MSKB", value:"316056");

 script_name(english:"MS02-003: WinReg Remote Registry Key Manipulation (316056)");
 script_summary(english:"Determines the permissions for the winreg key");

 script_set_attribute(attribute:"synopsis", value:"Local users can elevate their privileges.");
 script_set_attribute(attribute:"description", value:
"The key HKLM\SYSTEM\CurrentControlSet\Control\SecurePipeServers\winreg
is writeable by non-administrators.

The installation software of Microsoft Exchange sets this key to a
world-writeable mode.

Local users could use this misconfiguration to escalate their
privileges on this host.");
 script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2002/ms02-003");
 script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for the Windows NT, 2000 and
XP.");
 script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
 script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
 script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
 script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:"2002/02/07");
 script_set_attribute(attribute:"patch_publication_date", value:"2002/02/07");
 script_set_attribute(attribute:"plugin_publication_date", value:"2003/03/02");

 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:exchange_server");
 script_end_attributes();

 script_category(ACT_GATHER_INFO);
 script_copyright(english:"This script is Copyright (C) 2003-2018 Tenable Network Security, Inc.");
 script_family(english:"Windows : Microsoft Bulletins");

 script_dependencies("netbios_name_get.nasl", "smb_login.nasl", "smb_registry_full_access.nasl",
 		     "smb_reg_service_pack.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 = 'MS02-003';
kb = '316056';

kbs = make_list(kb);
if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

access = get_kb_item("SMB/registry_full_access");
if(!access)exit(0, "Registry not fully accessible.");

login	= kb_smb_login();
pass	= kb_smb_password();
domain  = kb_smb_domain();
port	= kb_smb_transport();

if(! smb_session_init()) audit(AUDIT_FN_FAIL, "smb_session_init");

r = NetUseAdd(login:login, password:pass, domain:domain, share:"IPC$");
if ( r != 1 )
{
  NetUseDel();
  audit(AUDIT_SHARE_FAIL,"IPC$");
}

hklm = RegConnectRegistry(hkey:HKEY_LOCAL_MACHINE);
if ( isnull(hklm) )
{
  NetUseDel();
  audit(AUDIT_REG_FAIL);
}

key = "SYSTEM\CurrentControlSet\Control\SecurePipeServers\WinReg";


key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED | ACCESS_SYSTEM_SECURITY);
if(!isnull(key_h))
{
 rep = RegGetKeySecurity (handle:key_h, type: DACL_SECURITY_INFORMATION | SACL_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION | OWNER_SECURITY_INFORMATION);
 if(!isnull(rep) && registry_key_writeable_by_non_admin(security_descriptor:rep))
 {
 {
 set_kb_item(name:"SMB/Missing/MS02-003", value:TRUE);
 hotfix_add_report(bulletin:bulletin, kb:kb);
 hotfix_security_hole();
 }
 }
 RegCloseKey (handle:key_h);
}

RegCloseKey (handle:hklm);
NetUseDel();

Oval

accepted2014-09-29T04:00:05.441-04:00
classvulnerability
contributors
  • nameTiffany Bergeron
    organizationThe MITRE Corporation
  • nameChristine Walzer
    organizationThe MITRE Corporation
  • nameJonathan Baker
    organizationThe MITRE Corporation
  • nameDragos Prisaca
    organizationG2, Inc.
  • nameEvgeniy Pavlov
    organizationALTX-SOFT
descriptionMicrosoft Exchange Server 2000 System Attendant gives "Everyone" group privileges to the WinReg key, which could allow remote attackers to read or modify registry keys.
familywindows
idoval:org.mitre.oval:def:1022
statusaccepted
submitted2004-06-03T12:00:00.000-04:00
titleMS Exchange Server Broad Permissions in WinReg Registry Key
version20

References