VMSA-2019-0013 : Command injection and information disclosure vulnerabilities

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from VMware Security Advisory 2019-0013. 
# The text itself is copyright (C) VMware Inc.
#

include("compat.inc");

if (description)
{
  script_id(128994);
  script_version("1.4");
  script_cvs_date("Date: 2019/12/27");

  script_cve_id("CVE-2017-16544", "CVE-2019-5531");
  script_xref(name:"VMSA", value:"2019-0013");
  script_xref(name:"IAVA", value:"2019-A-0344");

  script_name(english:"VMSA-2019-0013 : Command injection and information disclosure vulnerabilities");
  script_summary(english:"Checks esxupdate output for the patches");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote VMware ESXi host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"a. VMware ESXi busybox command injection vulnerability

ESXi contains a command injection vulnerability due to the use of vulnerable version of busybox that does not sanitize filenames which may result into executing any escape sequence in the shell.

An attacker may exploit this issue by tricking an ESXi Admin into executing shell commands by providing a malicious file. 

b. ESXi Host Client information disclosure vulnerability

An information disclosure vulnerability in clients arising from insufficient session expiration.

An attacker with physical access or an ability to mimic a websocket connection to a users browser may be able to obtain control of a VM Console after the user has logged out or their session has timed out."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://lists.vmware.com/pipermail/security-announce/2019/000467.html"
  );
  script_set_attribute(attribute:"solution", value:"Apply the missing patches.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esxi:6.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esxi:6.5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esxi:6.7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/18");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"VMware ESX Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/VMware/release", "Host/VMware/version");
  script_require_ports("Host/VMware/esxupdate", "Host/VMware/esxcli_software_vibs");

  exit(0);
}


include("audit.inc");
include("vmware_esx_packages.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/VMware/release")) audit(AUDIT_OS_NOT, "VMware ESX / ESXi");
if (
  !get_kb_item("Host/VMware/esxcli_software_vibs") &&
  !get_kb_item("Host/VMware/esxupdate")
) audit(AUDIT_PACKAGE_LIST_MISSING);


init_esx_check(date:"2019-09-16");
flag = 0;


if (esx_check(ver:"ESXi 6.0", vib:"VMware:esx-base:6.0.0-3.125.14475122")) flag++;
if (esx_check(ver:"ESXi 6.0", vib:"VMware:esx-ui:1.30.0-9063842")) flag++;
if (esx_check(ver:"ESXi 6.0", vib:"VMware:vsan:6.0.0-3.125.14292904")) flag++;
if (esx_check(ver:"ESXi 6.0", vib:"VMware:vsanhealth:6.0.0-3000000.3.0.3.125.14292905")) flag++;

if (esx_check(ver:"ESXi 6.5", vib:"VMware:esx-base:6.5.0-3.96.13932383")) flag++;
if (esx_check(ver:"ESXi 6.5", vib:"VMware:esx-tboot:6.5.0-3.96.13932383")) flag++;
if (esx_check(ver:"ESXi 6.5", vib:"VMware:esx-ui:1.31.0-10201673")) flag++;
if (esx_check(ver:"ESXi 6.5", vib:"VMware:vsan:6.5.0-3.96.13371499")) flag++;
if (esx_check(ver:"ESXi 6.5", vib:"VMware:vsanhealth:6.5.0-3.96.13530496")) flag++;

if (esx_check(ver:"ESXi 6.7", vib:"VMware:esx-base:6.7.0-0.28.10176879")) flag++;
if (esx_check(ver:"ESXi 6.7", vib:"VMware:esx-base:6.7.0-1.44.12986307")) flag++;
if (esx_check(ver:"ESXi 6.7", vib:"VMware:esx-update:6.7.0-1.44.12986307")) flag++;
if (esx_check(ver:"ESXi 6.7", vib:"VMware:vsan:6.7.0-0.28.10176879")) flag++;
if (esx_check(ver:"ESXi 6.7", vib:"VMware:vsan:6.7.0-1.44.11399678")) flag++;
if (esx_check(ver:"ESXi 6.7", vib:"VMware:vsanhealth:6.7.0-0.28.10176879")) flag++;
if (esx_check(ver:"ESXi 6.7", vib:"VMware:vsanhealth:6.7.0-1.44.11399680")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:esx_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");