Splunk Enterprise 6.2.x < 6.2.2 Multiple Vulnerabilities (FREAK) - Nessus

Medium Plugin ID: 81812

This page contains detailed information about the Splunk Enterprise 6.2.x < 6.2.2 Multiple Vulnerabilities (FREAK) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

hide

Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 81812
Name: Splunk Enterprise 6.2.x < 6.2.2 Multiple Vulnerabilities (FREAK)
Filename: splunk_622.nasl
Vulnerability Published: 2015-01-05
This Plugin Published: 2015-03-13
Last Modification Time: 2021-01-19
Plugin Version: 1.12
Plugin Type: remote
Plugin Family: CGI abuses
Dependencies: splunkd_detect.nasl, splunk_web_detect.nasl
Required KB Items [?]: installed_sw/Splunk

Vulnerability Information

Severity: Medium
Vulnerability Published: 2015-01-05
Patch Published: 2015-02-23
CVE [?]: CVE-2014-3572, CVE-2015-0204
CPE [?]: cpe:/a:splunk:splunk
In the News: True

Synopsis

The remote web server contains an application that is affected by multiple vulnerabilities.

Description

According to its version number, the Splunk Enterprise hosted on the remote web server is version 6.2.x prior to 6.2.2. It is, therefore, affected by the following vulnerabilities :

- A flaw exists with ECDH handshakes when using an ECDSA certificate without a ServerKeyExchange message. This allows a remote attacker to trigger a loss of forward secrecy from the ciphersuite. (CVE-2014-3572)

- A security feature bypass vulnerability, known as FREAK (Factoring attack on RSA-EXPORT Keys), exists due to the support of weak EXPORT_RSA cipher suites with keys less than or equal to 512 bits. A man-in-the-middle attacker may be able to downgrade the SSL/TLS connection to use EXPORT_RSA cipher suites which can be factored in a short amount of time, allowing the attacker to intercept and decrypt the traffic. (CVE-2015-0204)

- A denial of service vulnerability exists in Splunk Web that allows a remote attacker, using a specially crafted request, to trigger an assert and thus crash the Splunk Enterprise instance. (SPL-93754)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Splunk Enterprise 6.2.2 or later.

Public Exploits

Target Network Port(s): 8000, 8089
Target Asset(s): Services/www
Exploit Available: True (GitHub)
Exploit Ease: No exploit is required

Here's the list of publicly known exploits and PoCs for verifying the Splunk Enterprise 6.2.x < 6.2.2 Multiple Vulnerabilities (FREAK) vulnerability:

GitHub: https://github.com/84KaliPleXon3/a2sv
[CVE-2015-0204]
GitHub: https://github.com/AbhishekGhosh/FREAK-Attack-CVE-2015-0204-Testing-Script
[CVE-2015-0204: Basic BASH Script to Automate OpenSSL based testing for FREAK Attack (CVE-2015-0204) ...]
GitHub: https://github.com/Artem-Salnikov/devops-netology
[CVE-2015-0204]
GitHub: https://github.com/F4RM0X/script_a2sv
[CVE-2015-0204]
GitHub: https://github.com/H4CK3RT3CH/a2sv
[CVE-2015-0204]
GitHub: https://github.com/Mre11i0t/a2sv
[CVE-2015-0204]
GitHub: https://github.com/TopCaver/scz_doc_copy
[CVE-2015-0204]
GitHub: https://github.com/Vladislav-Pugachev/netology-DevOps-dz_-14
[CVE-2015-0204]
GitHub: https://github.com/WiktorMysz/devops-netology
[CVE-2015-0204]
GitHub: https://github.com/alexandrburyakov/Rep2
[CVE-2015-0204]
GitHub: https://github.com/bysart/devops-netology
[CVE-2015-0204]
GitHub: https://github.com/camel-clarkson/non-controlflow-hijacking-datasets
[CVE-2015-0204]
GitHub: https://github.com/clic-kbait/A2SV--SSL-VUL-Scan
[CVE-2015-0204: A2SV = Auto Scanning to SSL Vulnerability HeartBleed, CCS Injection, SSLv3 POODLE, ...]
GitHub: https://github.com/felmoltor/FreakVulnChecker
[CVE-2015-0204: This script check if your list of server is accepting Export cipher suites and could ...]
GitHub: https://github.com/fireorb/sslscanner
[CVE-2015-0204]
GitHub: https://github.com/ilya-starchikov/devops-netology
[CVE-2015-0204]
GitHub: https://github.com/javirodriguezzz/Shodan-Browser
[CVE-2015-0204]
GitHub: https://github.com/niccoX/patch-openssl-CVE-2014-0291_CVE-2015-0204
[CVE-2015-0204]
GitHub: https://github.com/nyc-tophile/A2SV--SSL-VUL-Scan
[CVE-2015-0204: A2SV = Auto Scanning to SSL Vulnerability HeartBleed, CCS Injection, SSLv3 POODLE, ...]
GitHub: https://github.com/pashicop/3.9_1
[CVE-2015-0204]
GitHub: https://github.com/scottjpack/Freak-Scanner
[CVE-2015-0204: Multithreaded FREAK scanner, used to detect SSL EXP Ciphers, vulnerable to ...]
GitHub: https://github.com/thekondrashov/stuff
[CVE-2015-0204]
GitHub: https://github.com/yellownine/netology-DevOps
[CVE-2015-0204]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:N/AC:L/Au:N/C:N/I:P/A:N/E:U/RL:OF/RC:C

CVSS Base Score:	5.0 (Medium)
Impact Subscore:	2.9
Exploitability Subscore:	10.0
CVSS Temporal Score:	3.7 (Low)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	3.7 (Low)

Go back to menu.

Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(81812);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2014-3572", "CVE-2015-0204");
  script_bugtraq_id(71936, 71942);
  script_xref(name:"CERT", value:"243585");

  script_name(english:"Splunk Enterprise 6.2.x < 6.2.2 Multiple Vulnerabilities (FREAK)");
  script_summary(english:"Checks the version of Splunk Enterprise.");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server contains an application that is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its version number, the Splunk Enterprise hosted on the
remote web server is version 6.2.x prior to 6.2.2. It is, therefore,
affected by the following vulnerabilities :

  - A flaw exists with ECDH handshakes when using an ECDSA
    certificate without a ServerKeyExchange message. This
    allows a remote attacker to trigger a loss of forward
    secrecy from the ciphersuite. (CVE-2014-3572)

  - A security feature bypass vulnerability, known as FREAK
    (Factoring attack on RSA-EXPORT Keys), exists due to the
    support of weak EXPORT_RSA cipher suites with keys less
    than or equal to 512 bits. A man-in-the-middle attacker
    may be able to downgrade the SSL/TLS connection to use
    EXPORT_RSA cipher suites which can be factored in a
    short amount of time, allowing the attacker to intercept
    and decrypt the traffic. (CVE-2015-0204)

 -  A denial of service vulnerability exists in Splunk Web
    that allows a remote attacker, using a specially crafted
    request, to trigger an assert and thus crash the Splunk
    Enterprise instance. (SPL-93754)

Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"https://www.splunk.com/view/SP-CAAANV8");
  script_set_attribute(attribute:"see_also", value:"https://www.smacktls.com/#freak");
  script_set_attribute(attribute:"solution", value:"Upgrade to Splunk Enterprise 6.2.2 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/01/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/02/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/13");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:splunk:splunk");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2015-2021 Tenable Network Security, Inc.");

  script_dependencies("splunkd_detect.nasl","splunk_web_detect.nasl");
  script_require_ports("Services/www", 8089, 8000);
  script_require_keys("installed_sw/Splunk");

  exit(0);
}

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

app = "Splunk";

get_install_count(app_name:app, exit_if_zero:TRUE);

port = get_http_port(default:8000, embedded:TRUE);

install = get_single_install(
  app_name : app,
  port     : port,
  exit_if_unknown_ver : TRUE
);

dir = install['path'];
ver = install['version'];

install_url = build_url(qs:dir, port:port);

# Affected : 6.2.x < 6.2.2
if (ver =~ "^6\.2($|\.)" && ver_compare(ver:ver,fix:"6.2.2",strict:FALSE) < 0)
{
  if (report_verbosity > 0)
  {
    report =
      '\n  URL               : ' + install_url +
      '\n  Installed version : ' +ver+
      '\n  Fixed version     : 6.2.2\n';
    security_warning(port:port, extra:report);
  }
  else security_warning(port);
  exit(0);
}
else audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url, ver);

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/splunk_622.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\splunk_622.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/splunk_622.nasl

Go back to menu.

How to Run

Here is how to run the Splunk Enterprise 6.2.x < 6.2.2 Multiple Vulnerabilities (FREAK) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select CGI abuses plugin family.
On the right side table select Splunk Enterprise 6.2.x < 6.2.2 Multiple Vulnerabilities (FREAK) plugin ID 81812.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl splunk_622.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a splunk_622.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - splunk_622.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state splunk_622.nasl -t <IP/HOST>

Go back to menu.

References

BID | SecurityFocus Bugtraq ID:

71936, 71942

CERT | Computer Emergency Response Team:

243585

See also:

Similar and related Nessus plugins:

66835 - Splunk 5.0.x < 5.0.3 Multiple Vulnerabilities
79722 - Splunk Enterprise 6.0.x < 6.0.6 Multiple Vulnerabilities
79723 - Splunk Enterprise 6.0.x < 6.0.7 Multiple Vulnerabilities (POODLE)
79724 - Splunk Enterprise 5.0.x < 5.0.10 / 6.1.x < 6.1.4 Multiple Vulnerabilities
83992 - Splunk Enterprise 5.0.x < 5.0.13 / 6.0.x < 6.0.9 / 6.1.x < 6.1.8 OpenSSL Vulnerabilities (FREAK)
85581 - Splunk Enterprise < 5.0.14 / 6.0.10 / 6.1.9 / 6.2.5 or Splunk Light < 6.2.5 Multiple Vulnerabilities
90705 - Splunk Enterprise < 5.0.15 / 6.0.11 / 6.1.10 / 6.2.9 / 6.3.3.4 or Splunk Light < 6.2.9 / 6.3.3.4 Multiple Vulnerabilities (DROWN)
92790 - Splunk Enterprise < 5.0.16 / 6.0.12 / 6.1.11 / 6.2.11 / 6.3.6 / 6.4.2 or Splunk Light < 6.4.2 Multiple Vulnerabilities
94932 - Splunk Enterprise < 5.0.17 / 6.0.13 / 6.1.12 / 6.2.12 / 6.3.8 / 6.4.4 or Splunk Light < 6.5.0 Multiple Vulnerabilities
97100 - Splunk Enterprise < 5.0.17 / 6.0.13 / 6.1.12 / 6.2.13 / 6.3.9 / 6.4.5 / 6.5.2 or Splunk Light < 6.5.2 Multiple Vulnerabilities
99235 - Splunk Enterprise < 5.0.18 / 6.0.14 / 6.1.13 / 6.2.13.1 / 6.3.10 / 6.4.6 / 6.5.3 / Splunk Light < 6.5.3 Multiple Vulnerabilities
104850 - Splunk Enterprise 6.3.x < 6.3.12 / 6.4.x < 6.4.9 / 6.5.x < 6.5.6 / 6.6 < 6.6.3.2 or 6.6.4 / 7.0.x < 7.0.0.1 Multiple SAML Implementation Vulnerabilities
158383 - Splunk Enterprise 8.1.x < 8.1.7.2 / 8.2.x < 8.2.3.3 Log4j
121164 - Splunk Information Disclosure Vulnerability (SP-CAAAP5E)
121163 - Splunk Information Exposure (SP-CAAAP5E
79721 - Splunk Enterprise 5.0.x < 5.0.11 Multiple Vulnerabilities (POODLE)
73575 - Splunk 6.x < 6.0.3 Multiple OpenSSL Vulnerabilities (Heartbleed)
76528 - Splunk Enterprise 4.3.x / 5.0.x < 5.0.9 / 6.0.x < 6.0.5 / 6.1.x < 6.1.2 Multiple OpenSSL Vulnerabilities
160471 - Splunk Enterprise 8.1.x < 8.1.7.2 / 8.2.x < 8.2.3.3 Log4j (macOS)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file splunk_622.nasl version 1.12. For more plugins, visit the Nessus Plugin Library.

Go back to menu.

Splunk Enterprise 6.2.x < 6.2.2 Multiple Vulnerabilities (FREAK) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

Nessus Plugin Library

Solving Problems with Office 365 Email from GoDaddy

Empire Module Library

CrackMapExec Module Library

Metasploit Android Modules

Top 16 Active Directory Vulnerabilities

Top 10 Vulnerabilities: Internal Infrastructure Pentest

Terminal Escape Injection

Cisco Password Cracking and Decrypting Guide

Capture Passwords using Wireshark

SSH Brute Force Attack Tool using PuTTY / Plink (ssh-putty-brute.ps1)

SMB Brute Force Attack Tool in PowerShell (SMBLogin.ps1)

Port Scanner in PowerShell (TCP/UDP)

Nessus CSV Parser and Extractor

Default Password Scanner (default-http-login-hunter.sh)