Vulnerabilities > CVE-2015-6055 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Microsoft Jscript and Vbscript

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-119
critical
nessus
NVD
Published: 2015-10-14
Updated: 2018-10-12

Summary

The Microsoft (1) VBScript 5.7 and 5.8 and (2) JScript 5.7 and 5.8 engines, as used in Internet Explorer 8 through 11 and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted Filter arguments, aka "Scripting Engine Memory Corruption Vulnerability."

Vulnerable Configurations

Part Description Count
Application
Microsoft
10

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.
  • 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_idMS15-106
    bulletin_url
    date2015-10-13T00:00:00
    impactRemote Code Execution
    knowledgebase_id3096441
    knowledgebase_url
    severityCritical
    titleCumulative Security Update for Internet Explorer
  • bulletin_idMS15-108
    bulletin_url
    date2015-10-13T00:00:00
    impactRemote Code Execution
    knowledgebase_id3089659
    knowledgebase_url
    severityCritical
    titleSecurity Update for JScript and VBScript to Address Remote Code Execution

Nessus

  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS15-106.NASL
    descriptionThe version of Internet Explorer installed on the remote host is missing Cumulative Security Update 3096441. It is, therefore, affected by multiple vulnerabilities, the majority of which are remote code execution vulnerabilities. An unauthenticated, remote attacker can exploit these issues by convincing a user to visit a specially crafted website, resulting in the execution of arbitrary code in the context of the current user.
    last seen2020-06-01
    modified2020-06-02
    plugin id86367
    published2015-10-13
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/86367
    titleMS15-106: Cumulative Security Update for Internet Explorer (3096441)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(86367);
  script_version("1.17");
  script_cvs_date("Date: 2019/11/22");

  script_cve_id(
    "CVE-2015-2482",
    "CVE-2015-6042",
    "CVE-2015-6044",
    "CVE-2015-6045",
    "CVE-2015-6046",
    "CVE-2015-6047",
    "CVE-2015-6048",
    "CVE-2015-6049",
    "CVE-2015-6050",
    "CVE-2015-6051",
    "CVE-2015-6052",
    "CVE-2015-6053",
    "CVE-2015-6055",
    "CVE-2015-6056",
    "CVE-2015-6059",
    "CVE-2015-6184"
  );
  script_bugtraq_id(
    76982,
    76984,
    76986,
    76987,
    76991,
    76992,
    76993,
    76995,
    77000,
    77002,
    77005,
    77006,
    77007,
    77010
  );
  script_xref(name:"MSFT", value:"MS15-106");
  script_xref(name:"MSKB", value:"3093983");
  script_xref(name:"MSKB", value:"3105210");

  script_name(english:"MS15-106: Cumulative Security Update for Internet Explorer (3096441)");
  script_summary(english:"Checks the version of mshtml.dll.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Internet Explorer installed on the remote host is
missing Cumulative Security Update 3096441. It is, therefore, affected
by multiple vulnerabilities, the majority of which are remote code
execution vulnerabilities. An unauthenticated, remote attacker can
exploit these issues by convincing a user to visit a specially crafted
website, resulting in the execution of arbitrary code in the context
of the current user.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2015/ms15-106");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows Vista, 2008, 7,
2008 R2, 8, 2012, 8.1, 2012 R2, and 10.");
  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:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-6184");

  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:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/10/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/10/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/10/13");

  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:ie");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2015-2019 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 = 'MS15-106';
kbs = make_list('3093983', '3105210');

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', win10:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

if (hotfix_check_server_core() == 1) audit(AUDIT_WIN_SERVER_CORE);

share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

if (
  # Windows 10
  hotfix_is_vulnerable(os:"10", sp:0, file:"mshtml.dll", version:"11.00.10240.16566", min_version:"11.0.10240.16000", dir:"\system32", bulletin:bulletin, kb:"3105210") ||

  # Windows 8.1 / Windows Server 2012 R2
  # Internet Explorer 11
  hotfix_is_vulnerable(os:"6.3", sp:0, file:"mshtml.dll", version:"11.0.9600.18052", min_version:"11.0.9600.17000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||

  # Windows 8 / Windows Server 2012
  # Internet Explorer 10
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"mshtml.dll", version:"10.0.9200.21636", min_version:"10.0.9200.21000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"mshtml.dll", version:"10.0.9200.17519", min_version:"10.0.9200.16000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||

  # Windows 7 / Server 2008 R2
  # Internet Explorer 10
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"mshtml.dll", version:"10.0.9200.21636", min_version:"10.0.9200.21000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"mshtml.dll", version:"10.0.9200.17519", min_version:"10.0.9200.16000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  # Internet Explorer 11
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"mshtml.dll", version:"11.0.9600.18057", min_version:"11.0.9600.17000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  # Internet Explorer 8
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"mshtml.dll", version:"8.0.7601.23206", min_version:"8.0.7601.22000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"mshtml.dll", version:"8.0.7601.19003", min_version:"8.0.7601.17000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  # Internet Explorer 9
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"mshtml.dll", version:"9.0.8112.20823", min_version:"9.0.8112.20000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"mshtml.dll", version:"9.0.8112.16708", min_version:"9.0.8112.16000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||

  # Vista / Windows Server 2008
  # Internet Explorer 7
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mshtml.dll", version:"7.0.6002.23798", min_version:"7.0.6002.23000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mshtml.dll", version:"7.0.6002.19488", min_version:"7.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  # Internet Explorer 8
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mshtml.dll", version:"8.0.6001.23750", min_version:"8.0.6001.23000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mshtml.dll", version:"8.0.6001.19690", min_version:"8.0.6001.18000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  # Internet Explorer 9
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mshtml.dll", version:"9.0.8112.20823", min_version:"9.0.8112.20000", dir:"\system32", bulletin:bulletin, kb:"3093983") ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mshtml.dll", version:"9.0.8112.16708", min_version:"9.0.8112.16000", dir:"\system32", bulletin:bulletin, kb:"3093983")
)
{
  set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}
  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS15-108.NASL
    descriptionThe VBScript and JScript engines on the remote host are affected by multiple vulnerabilities : - Multiple remote code execution vulnerabilities exist in the VBScript and JScript engines due to improper handling of objects in memory. A remote attacker can exploit these vulnerabilities by convincing a user to visit a specially crafted website, resulting in the execution of arbitrary code in the context of the current user. (CVE-2015-2482, CVE-2015-6055) - A security feature bypass vulnerability exists in the VBScript and JScript engines due to a failure to use Address Space Layout Randomization (ASLR). An attacker can exploit this to predict memory offsets in a call stack. (CVE-2015-6052) - An information disclosure vulnerability exists in the VBScript and JScript engines due to improper handling of objects in memory. A remote attacker can exploit this to disclose the contents of memory. (CVE-2015-6059)
    last seen2020-06-01
    modified2020-06-02
    plugin id86365
    published2015-10-13
    reporterThis script is Copyright (C) 2015-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/86365
    titleMS15-108: Security Update for JScript and VBScript to Address Remote Code Execution (3089659)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(86365);
  script_version("1.8");
  script_cvs_date("Date: 2018/11/15 20:50:31");

  script_cve_id(
    "CVE-2015-2482",
    "CVE-2015-6052",
    "CVE-2015-6055",
    "CVE-2015-6059"
  );
  script_bugtraq_id(
    77000,
    77005,
    77007,
    77010
  );
  script_xref(name:"MSFT", value:"MS15-108");
  script_xref(name:"MSKB", value:"3094995");
  script_xref(name:"MSKB", value:"3094996");
  script_xref(name:"IAVA", value:"2015-A-0244");

  script_name(english:"MS15-108: Security Update for JScript and VBScript to Address Remote Code Execution (3089659)");
  script_summary(english:"Checks the version of Vbscript.dll.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The VBScript and JScript engines on the remote host are affected by
multiple vulnerabilities :

  - Multiple remote code execution vulnerabilities exist in
    the VBScript and JScript engines due to improper
    handling of objects in memory. A remote attacker can
    exploit these vulnerabilities by convincing a user to
    visit a specially crafted website, resulting in the
    execution of arbitrary code in the context of the
    current user. (CVE-2015-2482, CVE-2015-6055)

  - A security feature bypass vulnerability exists in the
    VBScript and JScript engines due to a failure to use
    Address Space Layout Randomization (ASLR). An attacker
    can exploit this to predict memory offsets in a call
    stack. (CVE-2015-6052)

  - An information disclosure vulnerability exists in the
    VBScript and JScript engines due to improper handling of
    objects in memory. A remote attacker can exploit this to
    disclose the contents of memory. (CVE-2015-6059)");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2015/ms15-108");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows Vista, 2008, 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_set_attribute(attribute:"vuln_publication_date",value:"2015/10/13");
  script_set_attribute(attribute:"patch_publication_date",value:"2015/10/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/10/13");

  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", "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 = 'MS15-108';
kbs = make_list(
  "3094995",
  "3094996"
);

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') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

# if IE isn't installed we must still check the vbscript version
ie_ver = get_kb_item("SMB/IE/Version");
productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);

# This bulletin is only for systems without IE installed or with IE 7
# or lower.
if (!isnull(ie_ver) && (ver_compare(ver:ie_ver, fix:"8.0.0.0") >= 0))
  audit(AUDIT_INST_VER_NOT_VULN, "Internet Explorer", ie_ver);

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);

vuln = 0;

# VBScript 5.8
# only on Server Core 2008 R2
kb = "3094995";
if (
  hotfix_check_server_core() == 1 &&
  (
   # Windows Server 2008 R2
    hotfix_is_vulnerable(os:"6.1", sp:1, file:"Vbscript.dll", version:"5.8.7601.23194", min_version:"5.8.7601.22000", dir:"\system32", bulletin:bulletin, kb:kb) ||
    hotfix_is_vulnerable(os:"6.1", sp:1, file:"Vbscript.dll", version:"5.8.7601.18991", min_version:"5.8.7601.0",     dir:"\system32", bulletin:bulletin, kb:kb)
  )
) vuln++;

# VBScript 5.7
kb = "3094996";
if (
  # Vista / Windows 2008
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"Vbscript.dll", version:"5.7.6002.23798", min_version:"5.7.6002.22000", dir:"\System32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"Vbscript.dll", version:"5.7.6002.19488", min_version:"5.7.6002.0", dir:"\System32", 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();
  audit(AUDIT_HOST_NOT, 'affected');
}

References