EulerOS Virtualization 3.0.1.0 : kvm (EulerOS-SA-2019-1611)

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

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

if (description)
{
  script_id(125563);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id(
    "CVE-2018-12126",
    "CVE-2018-12127",
    "CVE-2018-12130",
    "CVE-2019-11091"
  );

  script_name(english:"EulerOS Virtualization 3.0.1.0 : kvm (EulerOS-SA-2019-1611)");
  script_summary(english:"Checks the rpm output for the updated packages.");

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

  - Modern Intel microprocessors implement hardware-level
    micro-optimizations to improve the performance of
    writing data back to CPU caches. The write operation is
    split into STA (STore Address) and STD (STore Data)
    sub-operations. These sub-operations allow the
    processor to hand-off address generation logic into
    these sub-operations for optimized writes. Both of
    these sub-operations write to a shared distributed
    processor structure called the 'processor store
    buffer'. As a result, an unprivileged attacker could
    use this flaw to read private data resident within the
    CPU's processor store buffer.(CVE-2018-12126)

  - A flaw was found in the implementation of the 'fill
    buffer', a mechanism used by modern CPUs when a
    cache-miss is made on L1 CPU cache. If an attacker can
    generate a load operation that would create a page
    fault, the execution will continue speculatively with
    incorrect data from the fill buffer while the data is
    fetched from higher level caches. This response time
    can be measured to infer data in the fill
    buffer.i1/4^CVE-2018-12130i1/4%0

  - Microprocessors use a aEUR~load portaEURtm subcomponent to
    perform load operations from memory or IO. During a
    load operation, the load port receives data from the
    memory or IO subsystem and then provides the data to
    the CPU registers and operations in the CPUaEURtms
    pipelines. Stale load operations results are stored in
    the 'load port' table until overwritten by newer
    operations. Certain load-port operations triggered by
    an attacker can be used to reveal data about previous
    stale requests leaking data back to the attacker via a
    timing side-channel.(CVE-2018-12127)

  - Uncacheable memory on some microprocessors utilizing
    speculative execution may allow an authenticated user
    to potentially enable information disclosure via a side
    channel with local access.(CVE-2019-11091)

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-2019-1611
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?80f311bb");
  script_set_attribute(attribute:"solution", value:
"Update the affected kvm packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/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:L/AC:H/PR:L/UI:N/S:C/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-2019-11091");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kvm");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.1.0");
  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) 2019-2021 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 != "3.0.1.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.1.0");
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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["kvm-4.4.11-30.014"];

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, "kvm");
}