Vulnerabilities > CVE-2015-2361 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Microsoft Windows 8.1 and Windows Server 2012

047910
CVSS 7.2 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
low complexity
microsoft
CWE-119
nessus

Summary

Hyper-V in Microsoft Windows 8.1 and Windows Server 2012 R2 does not properly initialize guest OS system data structures, which allows guest OS users to execute arbitrary code on the host OS or cause a denial of service (buffer overflow) by leveraging guest OS privileges, aka "Hyper-V Buffer Overflow Vulnerability."

Vulnerable Configurations

Part Description Count
OS
Microsoft
4

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.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Msbulletin

bulletin_idMS15-068
bulletin_url
date2015-07-14T00:00:00
impactRemote Code Execution
knowledgebase_id3072000
knowledgebase_url
severityCritical
titleVulnerabilities in Windows Hyper-V Could Allow Remote Code Execution

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS15-068.NASL
descriptionThe remote Windows host is affected by multiple remote code execution vulnerabilities in Hyper-V : - An error exists in how Hyper-V handles packet size memory initialization in guest virtual machines. An authenticated attacker with access to a guest virtual machine can exploit this by running a specially crafted application to execute arbitrary code in a host context. (CVE-2015-2361) - An error exists in how Hyper-V initializes system data structures in guest virtual machines. An authenticated attacker with access to a guest virtual machine can exploit this by running a specially crafted application to execute arbitrary code in a host context. (CVE-2015-2362)
last seen2020-06-01
modified2020-06-02
plugin id84762
published2015-07-15
reporterThis script is Copyright (C) 2015-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/84762
titleMS15-068: Vulnerabilities in Windows Hyper-V Could Allow Remote Code Execution (3072000)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(84762);
  script_version("1.6");
  script_cvs_date("Date: 2018/11/15 20:50:31");

  script_cve_id("CVE-2015-2361", "CVE-2015-2362");
  script_xref(name:"MSFT", value:"MS15-068");
  script_xref(name:"MSKB", value:"3046339");
  script_xref(name:"MSKB", value:"3046359");
  script_xref(name:"IAVB", value:"2015-B-0091");

  script_name(english:"MS15-068: Vulnerabilities in Windows Hyper-V Could Allow Remote Code Execution (3072000)");
  script_summary(english:"Checks the version of storvsp.sys or vmicvss.dll.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple remote code execution
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is affected by multiple remote code execution
vulnerabilities in Hyper-V :

  - An error exists in how Hyper-V handles packet size
    memory initialization in guest virtual machines. An
    authenticated attacker with access to a guest virtual
    machine can exploit this by running a specially crafted
    application to execute arbitrary code in a host context.
    (CVE-2015-2361)

  - An error exists in how Hyper-V initializes system data
    structures in guest virtual machines. An authenticated
    attacker with access to a guest virtual machine can
    exploit this by running a specially crafted application
    to execute arbitrary code in a host context.
    (CVE-2015-2362)");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2015/ms15-068");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows 2008, 2008 R2, 8,
2012, 8.1, and 2012 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: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:"2015/07/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/07/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/07/15");

  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) 2015-2018 Tenable Network Security, Inc.");

  script_dependencies("smb_hotfixes.nasl", "wmi_enum_server_features.nbin", "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("smb_reg_query.inc");
include("misc_func.inc");

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS15-068';
kb       = '3046339';
kb2      = '3046359';
vuln     = 0;

kbs = make_list(kb, kb2);
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:'2', win7:'1', win8:'0', win81:'0') <= 0)
  audit(AUDIT_OS_SP_NOT_VULN);

# Not embedded, Vista, Win7
productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
if (
  "Windows Embedded" >< productname ||
  "Vista" >< productname ||
  "Windows 7" >< productname
) exit(0, "The host is running "+productname+" and hence is not affected.");

# (Hyper-V ID = 20)
if (!get_kb_item('WMI/server_feature/20'))
{
  # could not determine if Hyper-V was enabled via wmi, so now check with registry
  # This is the key for the version of the integration services installer files,
  # which are only on the Hyper-V host.
  # Connect to remote registry.
  registry_init();
  hklm = registry_hive_connect(hive:HKEY_LOCAL_MACHINE, exit_on_fail:TRUE);
  hyperv_reg = get_registry_value(handle:hklm, item:"SOFTWARE\Microsoft\Windows NT\CurrentVersion\Virtualization\GuestInstaller\Version\Microsoft-Hyper-V-Guest-Installer");
  RegCloseKey(handle:hklm);
  close_registry(close:FALSE);
}
else hyperv_reg = TRUE;

systemroot = hotfix_get_systemroot();
if (!systemroot) audit(AUDIT_PATH_NOT_DETERMINED, 'system root');

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

####################################
# KB 3046359 ( storvsp.sys )
####################################
if (
  # Windows 8.1 / Windows Server 2012 R2
  hotfix_is_vulnerable(os:"6.3", sp:0, arch:"x64", file:"storvsp.sys", version:"6.3.9600.17723", min_version:"6.3.9600.16000", dir:"\system32\drivers", bulletin:bulletin, kb:kb2)
)
{
  vuln++;
}
NetUseDel(close:FALSE);

####################################
# KB 3046339 ( vmicvss.dll )
# SxS
####################################

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

if (hyperv_reg)
{
  winsxs = ereg_replace(pattern:'^[A-Za-z]:(.*)', replace:"\1\WinSxS", string:systemroot);
  winsxs_share = hotfix_path2share(path:systemroot);
  rc = NetUseAdd(login:login, password:pass, domain:domain, share:winsxs_share);
  if (rc != 1)
  {
    NetUseDel();
    audit(AUDIT_SHARE_FAIL, winsxs_share);
  }

  files = list_dir(basedir:winsxs, level:0, dir_pat:"amd64_microsoft-hyper-v-i", file_pat:"^vmicvss\.dll$", max_recurse:1);
  if (
    # Windows 8.1 / Windows Server 2012 R2
    hotfix_check_winsxs(os:'6.3', sp:0, arch:"x64", files:files, versions:make_list('6.3.9600.17723'), max_versions:make_list('6.3.9600.99999'), bulletin:bulletin, kb:kb) ||

    # Windows 8 64bit / Windows Server 2012
    hotfix_check_winsxs(os:'6.2', sp:0, arch:"x64", files:files, versions:make_list('6.2.9200.21473'), max_versions:make_list('6.2.9200.99999'), bulletin:bulletin, kb:kb) ||
    hotfix_check_winsxs(os:'6.2', sp:0, arch:"x64", files:files, versions:make_list('6.2.9200.17361'), max_versions:make_list('6.2.9200.19999'), bulletin:bulletin, kb:kb) ||

    # Server 2008 R2
    hotfix_check_winsxs(os:'6.1', sp:1, arch:"x64", files:files, versions:make_list('6.1.7601.23045'), max_versions:make_list('6.1.7601.99999'), bulletin:bulletin, kb:kb) ||
    hotfix_check_winsxs(os:'6.1', sp:1, arch:"x64", files:files, versions:make_list('6.1.7601.18844'), max_versions:make_list('6.1.7601.21999'), bulletin:bulletin, kb:kb) ||

    # Server 2008
    hotfix_check_winsxs(os:'6.0', sp:2, arch:"x64", files:files, versions:make_list('6.0.6002.23684'), max_versions:make_list('6.0.6002.99999'), bulletin:bulletin, kb:kb) ||
    hotfix_check_winsxs(os:'6.0', sp:2, arch:"x64", files:files, versions:make_list('6.0.6002.19378'), max_versions:make_list('6.1.7601.21999'), bulletin:bulletin, kb:kb)
  )
  {
    vuln++;
  }
}

if (vuln)
{
  set_kb_item(name:"SMB/Missing/"+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  if (!hyperv_reg)
    audit(AUDIT_HOST_NOT, 'affected (and Hyper-V was not detected)');
  else
    audit(AUDIT_HOST_NOT, 'affected');
}