Vulnerabilities > CVE-2017-4927 - LDAP Injection vulnerability in VMWare Vcenter Server 6.0/6.5

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
vmware
CWE-90
nessus
NVD
Published: 2017-11-17
Updated: 2017-12-04

Summary

VMware vCenter Server (6.5 prior to 6.5 U1 and 6.0 prior to 6.0 U3c) does not correctly handle specially crafted LDAP network packets which may allow for remote denial of service.

Vulnerable Configurations

Part Description Count
Application
Vmware
88

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • LDAP Injection
    An attacker manipulates or crafts an LDAP query for the purpose of undermining the security of the target. Some applications use user input to create LDAP queries that are processed by an LDAP server. For example, a user might provide their username during authentication and the username might be inserted in an LDAP query during the authentication process. An attacker could use this input to inject additional commands into an LDAP query that could disclose sensitive information. For example, entering a * in the aforementioned query might return information about all users on the system. This attack is very similar to an SQL injection attack in that it manipulates a query to gather additional information or coerce a particular return value.

Nessus

NASL familyMisc.
NASL idVMWARE_VCENTER_VMSA-2017-0017.NASL
descriptionThe version of VMware vCenter Server installed on the remote host is 5.5.x prior to 5.5u3f, 6.0.x prior to 6.0u3c, or 6.5.x prior to 6.5u1. It is, therefore, affected by multiple vulnerabilities. See advisory for details.
last seen2020-06-01
modified2020-06-02
plugin id104654
published2017-11-17
reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/104654
titleVMware vCenter Server 5.5.x < 5.5u3f / 6.0.x < 6.0u3c / 6.5.x < 6.5u1 Multiple Vulnerabilities (VMSA-2017-0017)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(104654);
  script_version("1.8");
  script_cvs_date("Date: 2019/11/12");

  script_cve_id("CVE-2017-4927", "CVE-2017-4928");
  script_bugtraq_id(101785, 101786);
  script_xref(name:"VMSA", value:"2017-0017");

  script_name(english:"VMware vCenter Server 5.5.x < 5.5u3f / 6.0.x < 6.0u3c / 6.5.x < 6.5u1 Multiple Vulnerabilities (VMSA-2017-0017)");
  script_summary(english:"Checks the version of VMware vCenter.");

  script_set_attribute(attribute:"synopsis", value:
"A virtualization management application installed on the remote host
is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of VMware vCenter Server installed on the remote host is
5.5.x prior to 5.5u3f, 6.0.x prior to 6.0u3c, or 6.5.x prior to 6.5u1. It is, 
therefore, affected by multiple vulnerabilities. See advisory for details.");
  script_set_attribute(attribute:"see_also", value:"https://www.vmware.com/security/advisories/VMSA-2017-0017.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to VMware vCenter Server version 5.5.u3f (5.5.0 build-6516310)
/ 6.0u3c (6.0.0 build-7037393) / 6.5u1 (6.5.0 build-5973321) or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-4928");

  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:"2017/11/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/11/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/17");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:vmware:vcenter_server");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("vmware_vcenter_detect.nbin");
  script_require_keys("Host/VMware/vCenter", "Host/VMware/version", "Host/VMware/release");
  script_require_ports("Services/www", 80, 443);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");

port = get_kb_item_or_exit("Host/VMware/vCenter");
version = get_kb_item_or_exit("Host/VMware/version");
release = get_kb_item_or_exit("Host/VMware/release");

# Extract and verify the build number
build = ereg_replace(pattern:'^VMware vCenter Server [0-9\\.]+ build-([0-9]+)$', string:release, replace:"\1");
if (build !~ '^[0-9]+$') exit(1, 'Failed to extract the build number from the release string.');

release = release - 'VMware vCenter Server ';
fixversion = NULL;

# Check version and build numbers
if (version =~ '^VMware vCenter 5\\.5$' && int(build) < 6516310) fixversion = '5.5.0 build-6516310';
else if (version =~ '^VMware vCenter 6\\.0$' && int(build) < 7037393) fixversion = '6.0.0 build-7037393';
else if(version =~ '^VMWare vCenter 6\\.5$' && int(build) < 5973321) fixversion = '6.5.0 build-5973321';
else audit(AUDIT_LISTEN_NOT_VULN, 'VMware vCenter', port, release);

report = report_items_str(
  report_items:make_array(
    "Installed version", release,
    "Fixed version", fixversion
  ),
  ordered_fields:make_list("Installed version", "Fixed version")
);
security_report_v4(port:port, severity:SECURITY_WARNING, extra:report);

References