Vulnerabilities > CVE-2018-1149 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Nuuo Nvrmini2 Firmware

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
nuuo
CWE-119
critical
nessus
NVD
Published: 2018-09-19
Updated: 2024-11-21

Summary

cgi_system in NUUO's NVRMini2 3.8.0 and below allows remote attackers to execute arbitrary code via crafted HTTP requests.

Vulnerable Configurations

Part Description Count
OS
Nuuo
51
Hardware
Nuuo
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

NASL familyMisc.
NASL idNUUO_MULTIPLE_VULNERABILITIES.NASL
descriptionThe version of NUUO NVRMini2 installed on the remote host is affected by multiple vulnerabilities: - NUUO NVRMini2 web server utilizes CGI binaries in order to handle a variety of commands that require authenticated interaction. Implemented session handling mechanism doesn
last seen2020-06-01
modified2020-06-02
plugin id117427
published2018-09-17
reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/117427
titleNUUO NVRMini2 Multiple Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(117427);
  script_version("1.5");
  script_cvs_date("Date: 2019/11/01");

  script_cve_id("CVE-2018-1149", "CVE-2018-1150");
  script_xref(name:"TRA", value:"TRA-2018-25");

  script_name(english:"NUUO NVRMini2 Multiple Vulnerabilities");
  script_summary(english:"Checks the version of NUUO NVRMini2.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of NUUO NVRMini2 installed on the remote host is affected
by multiple vulnerabilities:

  - NUUO NVRMini2 web server utilizes CGI binaries in order to handle
    a variety of commands that require authenticated interaction.
    Implemented session handling mechanism doesn't validate user's
    input properly. Malicious attackers can trigger stack overflow
    in session management routines in order to execute arbitrary
    code. (CVE-2018-1149)

  - NUUO NVRMini2 web server contains back door functionality. Back
    door PHP code (when enabled) allows unauthenticated attacker to
    change a password for any registered user except administrator
    of the system. (CVE-2018-1150)");
  script_set_attribute(attribute:"solution", value:
"All users of NUUO NVRMini2 should upgrade to version 3.9.1
(03.09.0001.0000) or later. Otherwise, contact the vendor for a fix.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-1149");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/09/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/17");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:nuuo:nvrmini_2");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("nuuo_netgear_www_video_detect.nbin");
  script_require_keys("installed_sw/NUUO NVR");
  script_require_ports("Services/www", 80);

  exit(0);
}

include("http.inc");
include("vcf.inc");

app_name = "NUUO NVR";
get_install_count(app_name:app_name, exit_if_zero:TRUE);

port = get_http_port(default:80, embedded:TRUE, php:TRUE);

app = vcf::get_app_info(app:app_name, webapp:TRUE, port:port);
vcf::check_granularity(app_info:app, sig_segments:4);

constraints = [
  {
    "fixed_version":"03.09.0001.0000",
    "fixed_display":"3.9.1 (03.09.0001.0000)"
  }];

vcf::check_version_and_report(app_info:app, constraints:constraints, severity:SECURITY_HOLE, strict:FALSE);

References