CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
EPSS
Percentile
92.4%
The remote VMware ESX / ESXi host is missing a security-related patch.
It is, therefore, affected by affected by a heap-based underflow condition in the bundled libxml2 library due to incorrect parsing of strings not containing an expected space. A remote attacker can exploit this, via a specially crafted XML document, to cause a denial of service condition or the execution of arbitrary code.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(89664);
script_version("1.4");
script_cvs_date("Date: 2018/11/15 20:50:24");
script_cve_id("CVE-2012-5134");
script_bugtraq_id(56684);
script_xref(name:"VMSA", value:"2013-0004");
script_name(english:"VMware ESX / ESXi libxml2 RCE (VMSA-2013-0004) (remote check)");
script_summary(english:"Checks the version and build numbers of the remote host.");
script_set_attribute(attribute:"synopsis", value:
"The remote VMware ESX / ESXi host is missing a security-related patch.");
script_set_attribute(attribute:"description", value:
"The remote VMware ESX / ESXi host is missing a security-related patch.
It is, therefore, affected by affected by a heap-based underflow
condition in the bundled libxml2 library due to incorrect parsing of
strings not containing an expected space. A remote attacker can
exploit this, via a specially crafted XML document, to cause a denial
of service condition or the execution of arbitrary code.");
script_set_attribute(attribute:"see_also", value:"https://www.vmware.com/security/advisories/VMSA-2013-0004.html");
script_set_attribute(attribute:"solution", value:
"Apply the appropriate patch according to the vendor advisory that
pertains to ESX version 4.0 / 4.1 or ESXi version 4.0 / 4.1.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
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:"2012/10/29");
script_set_attribute(attribute:"patch_publication_date", value:"2013/03/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/04");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esx");
script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esxi");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Misc.");
script_copyright(english:"This script is Copyright (C) 2016-2018 Tenable Network Security, Inc.");
script_dependencies("vmware_vsphere_detect.nbin");
script_require_keys("Host/VMware/version", "Host/VMware/release");
script_require_ports("Host/VMware/vsphere");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
ver = get_kb_item_or_exit("Host/VMware/version");
rel = get_kb_item_or_exit("Host/VMware/release");
port = get_kb_item_or_exit("Host/VMware/vsphere");
esx = '';
build = 0;
fix = FALSE;
if ("ESX" >!< rel)
audit(AUDIT_OS_NOT, "VMware ESX/ESXi");
extract = eregmatch(pattern:"^(ESXi?) (\d\.\d).*$", string:ver);
if (empty_or_null(extract))
audit(AUDIT_UNKNOWN_APP_VER, "VMware ESX/ESXi");
esx = extract[1];
ver = extract[2];
extract = eregmatch(pattern:'^VMware ESXi?.* build-([0-9]+)$', string:rel);
if (isnull(extract))
audit(AUDIT_UNKNOWN_BUILD, "VMware " + esx, ver);
build = int(extract[1]);
fixes = make_array(
"4.0", 1070634,
"4.1", 1050704
);
fix = fixes[ver];
if (!fix)
audit(AUDIT_INST_VER_NOT_VULN, esx, ver, build);
if (build < fix)
{
report = '\n Version : ' + esx + " " + ver +
'\n Installed build : ' + build +
'\n Fixed build : ' + fix +
'\n';
security_report_v4(port:port, severity:SECURITY_WARNING, extra:report);
exit(0);
}
else
audit(AUDIT_INST_VER_NOT_VULN, "VMware " + esx, ver, build);