EulerOS Virtualization for ARM 64 3.0.6.0 : ruby (EulerOS-SA-2020-1691)

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

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

if (description)
{
  script_id(137798);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/05");

  script_cve_id("CVE-2020-10663", "CVE-2020-10933");

  script_name(english:"EulerOS Virtualization for ARM 64 3.0.6.0 : ruby (EulerOS-SA-2020-1691)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization for ARM 64 host is missing multiple security
updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the ruby packages installed, the EulerOS
Virtualization for ARM 64 installation on the remote host is affected
by the following vulnerabilities :

  - An issue was discovered in Ruby 2.5.x through 2.5.7,
    2.6.x through 2.6.5, and 2.7.0. If a victim calls
    BasicSocket#read_nonblock(requested_size, buffer,
    exception: false), the method resizes the buffer to fit
    the requested size, but no data is copied. Thus, the
    buffer string provides the previous value of the heap.
    This may expose possibly sensitive data from the
    interpreter.(CVE-2020-10933)

  - The JSON gem through 2.2.0 for Ruby, as used in Ruby
    2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through
    2.6.5, has an Unsafe Object Creation Vulnerability.
    This is quite similar to CVE-2013-0269, but does not
    rely on poor garbage-collection behavior within Ruby.
    Specifically, use of JSON parsing methods can lead to
    creation of a malicious object within the interpreter,
    with adverse effects that are
    application-dependent.(CVE-2020-10663)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1691
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2e474eb4");
  script_set_attribute(attribute:"solution", value:
"Update the affected ruby packages.");
  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:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-10933");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-10663");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2020/06/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ruby");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ruby-irb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:ruby-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygem-bigdecimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygem-io-console");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygem-json");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygem-openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygem-psych");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygem-rdoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:rubygems");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.6.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "3.0.6.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.6.0");
if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

flag = 0;

pkgs = ["ruby-2.5.1-98.h8.eulerosv2r8",
        "ruby-irb-2.5.1-98.h8.eulerosv2r8",
        "ruby-libs-2.5.1-98.h8.eulerosv2r8",
        "rubygem-bigdecimal-1.3.4-98.h8.eulerosv2r8",
        "rubygem-io-console-0.4.6-98.h8.eulerosv2r8",
        "rubygem-json-2.1.0-98.h8.eulerosv2r8",
        "rubygem-openssl-2.1.0-98.h8.eulerosv2r8",
        "rubygem-psych-3.0.2-98.h8.eulerosv2r8",
        "rubygem-rdoc-6.0.1-98.h8.eulerosv2r8",
        "rubygems-2.7.6-98.h8.eulerosv2r8"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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");
}