MS10-092: Vulnerability in Task Scheduler Could Allow Elevation of Privilege (2305420)

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(51164);
  script_version("1.24");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/08/05");

  script_cve_id("CVE-2010-3338");
  script_bugtraq_id(44357);
  script_xref(name:"EDB-ID", value:"15589");
  script_xref(name:"EDB-ID", value:"19930");
  script_xref(name:"IAVB", value:"2010-B-0110-S");
  script_xref(name:"MSFT", value:"MS10-092");
  script_xref(name:"MSKB", value:"2305420");

  script_name(english:"MS10-092: Vulnerability in Task Scheduler Could Allow Elevation of Privilege (2305420)");
  script_summary(english:"Checks version of Schedsvc.dll");

  script_set_attribute(attribute:"synopsis", value:
"A privilege escalation vulnerability exists in Windows Task
Scheduler.");
  script_set_attribute(attribute:"description", value:
"The remote host is running a version of Windows that contains a flaw
in the task scheduler that may lead to a privilege escalation by
running a specially crafted application.

To exploit this vulnerability, an attacker must have valid logon
credentials and be able to log on locally.");
  # https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2010/ms10-092
  script_set_attribute(attribute:"see_also", value:"https://www.nessus.org/u?49c5acb5");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Vista, 2008, 7, and 2008
R2.");
  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:F/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2010-3338");
  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:"metasploit_name", value:'Windows Escalate Task Scheduler XML Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2010/09/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2010/12/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/12/15");

  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) 2010-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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 = 'MS10-092';
kbs = make_list("2305420");
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(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 = "2305420";
if (
  # Windows 7 / Server 2008 R2
  hotfix_is_vulnerable(os:"6.1", sp:0, file:"Schedsvc.dll", version:"6.1.7600.20830", min_version:"6.1.7600.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.1", sp:0, file:"Schedsvc.dll", version:"6.1.7600.16699", 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:"Schedsvc.dll", version:"6.0.6002.22519", min_version:"6.0.6002.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"Schedsvc.dll", version:"6.0.6002.18342", min_version:"6.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:1, file:"Schedsvc.dll", version:"6.0.6001.22791", min_version:"6.0.6001.22791", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:1, file:"Schedsvc.dll", version:"6.0.6001.18551", min_version:"6.0.6001.18000", dir:"\system32", bulletin:bulletin, kb:kb)
)
{
  set_kb_item(name:"SMB/Missing/MS10-092", value:TRUE);
  hotfix_security_hole();

  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}