| code | #
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(57280);
script_version("1.20");
script_cvs_date("Date: 2018/11/15 20:50:31");
script_cve_id("CVE-2011-3396", "CVE-2011-3413");
script_bugtraq_id(50964, 50967);
script_xref(name:"IAVA", value:"2011-A-0166");
script_xref(name:"MSFT", value:"MS11-094");
script_xref(name:"MSKB", value:"2553185");
script_xref(name:"MSKB", value:"2596764");
script_xref(name:"MSKB", value:"2596843");
script_xref(name:"MSKB", value:"2596912");
script_name(english:"MS11-094: Vulnerabilities in Microsoft PowerPoint Could Allow Remote Code Execution (2639142)");
script_summary(english:"Checks Ppcore.dll / Ppcnv.dll / PowerPointViewer version");
script_set_attribute(
attribute:"synopsis",
value:
"Arbitrary code can be executed on the remote host through Microsoft
PowerPoint."
);
script_set_attribute(
attribute:"description",
value:
"The remote Windows host has a version of Microsoft PowerPoint that is
affected by multiple vulnerabilities :
- The application insecurely restricts the path used for
loading external DLL files. This could lead to
arbitrary code execution. (CVE-2011-3396)
- The application could cause memory to be corrupted when
reading an invalid record in a specially crafted
PowerPoint file. (CVE-2011-3413)
If a remote attacker can trick a user into opening a malicious
PowerPoint file using the affected install, either vulnerability can
be leveraged to execute arbitrary code subject to the user's
privileges."
);
script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2011/ms11-094");
script_set_attribute(
attribute:"solution",
value:
"Microsoft has released a set of patches for PowerPoint 2007 and 2010,
PowerPoint Viewer 2007, and Office Compatibility Pack."
);
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_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2011/12/13");
script_set_attribute(attribute:"patch_publication_date", value:"2011/12/13");
script_set_attribute(attribute:"plugin_publication_date", value:"2011/12/13");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_compatibility_pack");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:powerpoint");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:powerpoint_viewer");
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) 2011-2018 Tenable Network Security, Inc.");
script_dependencies("smb_nt_ms02-031.nasl", "office_installed.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("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("misc_func.inc");
include("audit.inc");
get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");
bulletin = 'MS11-094';
kbs = make_list("2553185", "2596764", "2596843", "2596912");
if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);
vuln = FALSE;
# Check PowerPoint versions.
installs = get_kb_list("SMB/Office/PowerPoint/*/ProductPath");
if (!isnull(installs))
{
foreach install (keys(installs))
{
version = install - 'SMB/Office/PowerPoint/' - '/ProductPath';
path = installs[install];
if (isnull(path)) path = 'n/a';
info = "";
old_report = hotfix_get_report();
ver = split(version, sep:'.', keep:FALSE);
for (i=0; i<max_index(ver); i++)
ver[i] = int(ver[i]);
# PowerPoint 2010
office_sp2010 = get_kb_item("SMB/Office/2010/SP");
office_sp2007 = get_kb_item("SMB/Office/2007/SP");
if ((!isnull(office_sp2010) && office_sp2010 == 0) && (ver[0] == 14 && ver[1] == 0 && ver[2] < 6009))
{
kb = "2553185";
fixed_version = "14.0.6111.5000";
if (path != 'n/a')
{
path = ereg_replace(pattern:"^([A-Za-z]:.*)\\PowerPnt.exe", string:path, replace:"\1");
share = hotfix_path2share(path:path);
if (is_accessible_share(share:share))
{
if (hotfix_is_vulnerable(file:"ppcore.dll", version:fixed_version, min_version:"14.0.0.0", path:path, bulletin:bulletin, kb:kb))
{
file = ereg_replace(pattern:"^[A-Za-z]:(.*)", string:path, replace:"\1\ppcore.dll");
kb_name = "SMB/FileVersions/"+tolower(share-'$')+tolower(str_replace(string:file, find:"\", replace:"/"));
version = get_kb_item(kb_name);
info =
'\n Product : PowerPoint 2010' +
'\n Path : ' + path + '\\ppcore.dll' +
'\n Installed version : ' + version +
'\n Fixed version : ' + fixed_version + '\n';
}
}
}
}
# PowerPoint 2007 (not SP3)
else if ((!isnull(office_sp2007) && office_sp2007 == 2) && (ver[0] == 12 && ver[1] == 0 && ver[2] < 6600))
{
kb = "2596764";
fixed_version = "12.0.6654.5000";
if (path != 'n/a')
{
path = ereg_replace(pattern:"^([A-Za-z]:.*)\\PowerPnt.exe", string:path, replace:"\1");
share = hotfix_path2share(path:path);
if (is_accessible_share(share:share))
{
if (hotfix_is_vulnerable(file:"ppcore.dll", version:fixed_version, min_version:"12.0.0.0", path:path, bulletin:bulletin, kb:kb))
{
file = ereg_replace(pattern:"^[A-Za-z]:(.*)", string:path, replace:"\1\ppcore.dll");
kb_name = "SMB/FileVersions/"+tolower(share-'$')+tolower(str_replace(string:file, find:"\", replace:"/"));
version = get_kb_item(kb_name);
info =
'\n Product : PowerPoint 2007' +
'\n Path : ' + path + '\\ppcore.dll' +
'\n Installed version : ' + version +
'\n Fixed version : ' + fixed_version + '\n';
hotfix_check_fversion_end();
}
}
}
}
}
if (info)
{
hcf_report = '';
hotfix_add_report(old_report + info, bulletin:bulletin, kb:kb);
vuln = TRUE;
}
}
# Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats
installs = get_kb_list("SMB/Office/PowerPointCnv/*/ProductPath");
if (!isnull(installs))
{
foreach install (keys(installs))
{
version = install - 'SMB/Office/PowerPointCnv/' - '/ProductPath';
path = installs[install];
if (isnull(path)) path = 'n/a';
info = "";
ver = split(version, sep:'.', keep:FALSE);
for (i=0; i<max_index(ver); i++)
ver[i] = int(ver[i]);
if (path != 'n/a')
{
path = ereg_replace(pattern:"^([A-Za-z]:.*)\\Ppcnvcom.exe", string:path, replace:"\1");
# PowerPoint 2007 converter.
if (ver[0] == 12 && path)
{
kb = "2596843";
fixed_version = "12.0.6654.5000";
share = hotfix_path2share(path:path);
if (!is_accessible_share(share:share)) exit(1, "Can't connect to "+share+" share.");
old_report = hotfix_get_report();
if (hotfix_is_vulnerable(file:"ppcnv.dll", version:fixed_version, min_version:"12.0.0.0", path:path, bulletin:bulletin, kb:kb))
{
file = ereg_replace(pattern:"^[A-Za-z]:(.*)", string:path, replace:"\1\ppcnv.dll");
kb_name = "SMB/FileVersions/"+tolower(share-'$')+tolower(str_replace(string:file, find:"\", replace:"/"));
version = get_kb_item(kb_name);
vuln = TRUE;
info =
'\n Product : Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats' +
'\n Path : ' + path + '\\ppcnv.dll' +
'\n Installed version : ' + version +
'\n Fixed version : ' + fixed_version + '\n';
hcf_report = '';
hotfix_add_report(old_report+info, bulletin:bulletin, kb:kb);
break;
}
}
}
}
}
# PowerPoint Viewer.
installs = get_kb_list("SMB/Office/PowerPointViewer/*/ProductPath");
if (!isnull(installs))
{
foreach install (keys(installs))
{
version = install - 'SMB/Office/PowerPointViewer/' - '/ProductPath';
path = installs[install];
if (isnull(path)) path = 'n/a';
ver = split(version, sep:'.', keep:FALSE);
for (i=0; i<max_index(ver); i++)
ver[i] = int(ver[i]);
# PowerPoint Viewer 2007.
#
# nb: SP3 has a file version of "12.0.6600.1000" but is not affected per
# MS11-094. The previous release for SP2 seems to have been for MS11-022,
# which brought the version to 12.0.6550.5000.
if (ver[0] == 12 && ver[1] == 0 && ver[2] < 6600)
{
kb = "2596912";
info =
'\n Product : PowerPoint Viewer 2007\n' +
' File : ' + path + '\n' +
' Installed version : ' + version + '\n' +
' Fixed version : 12.0.6654.5000\n';
hotfix_add_report(info, bulletin:bulletin, kb:kb);
vuln = TRUE;
}
}
}
hotfix_check_fversion_end();
if (vuln)
{
set_kb_item(name:"SMB/Missing/"+bulletin, value:TRUE);
hotfix_security_hole();
exit(0);
}
else audit(AUDIT_HOST_NOT, 'affected');
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