NewStart CGSL MAIN 5.04 : ruby Multiple Vulnerabilities (NS-SA-2019-0013)

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

# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2019-0013. The text
# itself is copyright (C) ZTE, Inc.

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

if (description)
{
  script_id(127164);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/05/19");

  script_cve_id(
    "CVE-2017-0898",
    "CVE-2017-0899",
    "CVE-2017-0900",
    "CVE-2017-0901",
    "CVE-2017-0902",
    "CVE-2017-0903",
    "CVE-2017-10784",
    "CVE-2017-14033",
    "CVE-2017-14064",
    "CVE-2017-17405",
    "CVE-2017-17790"
  );

  script_name(english:"NewStart CGSL MAIN 5.04 : ruby Multiple Vulnerabilities (NS-SA-2019-0013)");

  script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version MAIN 5.04, has ruby packages installed that are affected by multiple
vulnerabilities:

  - A buffer overflow vulnerability was found in the JSON
    extension of ruby. An attacker with the ability to pass
    a specially crafted JSON input to the extension could
    use this flaw to expose the interpreter's heap memory.
    (CVE-2017-14064)

  - The lazy_initialize function in lib/resolv.rb did not
    properly process certain filenames. A remote attacker
    could possibly exploit this flaw to inject and execute
    arbitrary commands. (CVE-2017-17790)

  - It was discovered that the Net::FTP module did not
    properly process filenames in combination with certain
    operations. A remote attacker could exploit this flaw to
    execute arbitrary commands by setting up a malicious FTP
    server and tricking a user or Ruby application into
    downloading files with specially crafted names using the
    Net::FTP module. (CVE-2017-17405)

  - A buffer underflow was found in ruby's sprintf function.
    An attacker, with ability to control its format string
    parameter, could send a specially crafted string that
    would disclose heap memory or crash the interpreter.
    (CVE-2017-0898)

  - It was found that the decode method of the OpenSSL::ASN1
    module was vulnerable to buffer underrun. An attacker
    could pass a specially crafted string to the application
    in order to crash the ruby interpreter, causing a denial
    of service. (CVE-2017-14033)

  - It was found that WEBrick did not sanitize all its log
    messages. If logs were printed in a terminal, an
    attacker could interact with the terminal via the use of
    escape sequences. (CVE-2017-10784)

  - It was found that rubygems did not sanitize gem names
    during installation of a given gem. A specially crafted
    gem could use this flaw to install files outside of the
    regular directory. (CVE-2017-0901)

  - It was found that rubygems could use an excessive amount
    of CPU while parsing a sufficiently long gem summary. A
    specially crafted gem from a gem repository could freeze
    gem commands attempting to parse its summary.
    (CVE-2017-0900)

  - A vulnerability was found where rubygems did not
    sanitize DNS responses when requesting the hostname of
    the rubygems server for a domain, via a _rubygems._tcp
    DNS SRV query. An attacker with the ability to
    manipulate DNS responses could direct the gem command
    towards a different domain. (CVE-2017-0902)

  - A vulnerability was found where rubygems did not
    properly sanitize gems' specification text. A specially
    crafted gem could interact with the terminal via the use
    of escape sequences. (CVE-2017-0899)

  - A vulnerability was found where the rubygems module was
    vulnerable to an unsafe YAML deserialization when
    inspecting a gem. Applications inspecting gem files
    without installing them can be tricked to execute
    arbitrary code in the context of the ruby interpreter.
    (CVE-2017-0903)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2019-0013");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL ruby packages. Note that updated packages may not be available yet. Please contact ZTE for
more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  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:N/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:"cvss_score_source", value:"CVE-2017-17405");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2017-17790");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/08/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"NewStart CGSL Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");

  exit(0);
}

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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

release = get_kb_item("Host/ZTE-CGSL/release");
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, "NewStart Carrier Grade Server Linux");

if (release !~ "CGSL MAIN 5.04")
  audit(AUDIT_OS_NOT, 'NewStart CGSL MAIN 5.04');

if (!get_kb_item("Host/ZTE-CGSL/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "NewStart Carrier Grade Server Linux", cpu);

flag = 0;

pkgs = {
  "CGSL MAIN 5.04": [
    "ruby-2.0.0.648-33.el7_4",
    "ruby-debuginfo-2.0.0.648-33.el7_4",
    "ruby-devel-2.0.0.648-33.el7_4",
    "ruby-doc-2.0.0.648-33.el7_4",
    "ruby-irb-2.0.0.648-33.el7_4",
    "ruby-libs-2.0.0.648-33.el7_4",
    "ruby-tcltk-2.0.0.648-33.el7_4",
    "rubygem-bigdecimal-1.2.0-33.el7_4",
    "rubygem-io-console-0.4.2-33.el7_4",
    "rubygem-json-1.7.7-33.el7_4",
    "rubygem-minitest-4.3.2-33.el7_4",
    "rubygem-psych-2.0.0-33.el7_4",
    "rubygem-rake-0.9.6-33.el7_4",
    "rubygem-rdoc-4.0.0-33.el7_4",
    "rubygems-2.0.14.1-33.el7_4",
    "rubygems-devel-2.0.14.1-33.el7_4"
  ]
};
pkg_list = pkgs[release];

foreach (pkg in pkg_list)
  if (rpm_check(release:"ZTE " + release, reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ruby");
}