OracleVM 3.4 : Unbreakable / etc (OVMSA-2019-0039)

#
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from OracleVM
# Security Advisory OVMSA-2019-0039.
#

include("compat.inc");

if (description)
{
  script_id(127566);
  script_version("1.3");
  script_cvs_date("Date: 2020/01/06");

  script_cve_id("CVE-2019-13631");

  script_name(english:"OracleVM 3.4 : Unbreakable / etc (OVMSA-2019-0039)");
  script_summary(english:"Checks the RPM output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote OracleVM host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote OracleVM system is missing necessary patches to address
critical security updates :

  - xen: let alloc_xenballooned_pages fail if not enough
    memory free (Juergen Gross) [Orabug: 30073695]

  - mm/page_alloc.c: calculate 'available' memory in a
    separate function (Igor Redko) [Orabug: 30073695]

  - Input: gtco - bounds check collection indent level
    (Grant Hernandez) [Orabug: 30074413] (CVE-2019-13631)

  - Documentation/Docbook/Makefile: process xml files in
    parallel, based on nproc --all value (Alexander
    Burmashev) [Orabug: 30079814]

  - net: rds: fix compile warning (Zhu Yanjun) [Orabug:
    30118035]

  - Revert 'xen-netback: stop netif TX queue on guest
    queuing failure' (Brian Maly) [Orabug: 30128203]

  - xen-netback: stop netif TX queue on guest queuing
    failure (Ankur Arora) [Orabug: 30028200]

  - scsi: megaraid_sas: fix panic on loading firmware
    crashdump (Junxiao Bi) [Orabug: 29993112]"
  );
  # https://oss.oracle.com/pipermail/oraclevm-errata/2019-August/000955.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?9ff6ba96"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected kernel-uek / kernel-uek-firmware packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:P/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:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:kernel-uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:kernel-uek-firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.4");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/08/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"OracleVM Local Security Checks");

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

  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/OracleVM/release");
if (isnull(release) || "OVS" >!< release) audit(AUDIT_OS_NOT, "OracleVM");
if (! preg(pattern:"^OVS" + "3\.4" + "(\.[0-9]|$)", string:release)) audit(AUDIT_OS_NOT, "OracleVM 3.4", "OracleVM " + release);
if (!get_kb_item("Host/OracleVM/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, "OracleVM", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);

flag = 0;
if (rpm_check(release:"OVS3.4", reference:"kernel-uek-4.1.12-124.30.1.el6uek")) flag++;
if (rpm_check(release:"OVS3.4", reference:"kernel-uek-firmware-4.1.12-124.30.1.el6uek")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel-uek / kernel-uek-firmware");
}