Scientific Linux Security Update : libvirt on SL7.x x86_64 (20180626) (Spectre)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include("compat.inc");

if (description)
{
  script_id(110718);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/04/15");

  script_cve_id("CVE-2018-3639");

  script_name(english:"Scientific Linux Security Update : libvirt on SL7.x x86_64 (20180626) (Spectre)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description",
    value:
"Security Fix(es) :

  - An industry-wide issue was found in the way many modern
    microprocessor designs have implemented speculative
    execution of Load & Store instructions (a commonly
    used performance optimization). It relies on the
    presence of a precisely-defined instruction sequence in
    the privileged code as well as the fact that memory read
    from address to which a recent memory write has occurred
    may see an older value and subsequently cause an update
    into the microprocessor's data cache even for
    speculatively executed instructions that never actually
    commit (retire). As a result, an unprivileged attacker
    could use this flaw to read privileged memory by
    conducting targeted cache side-channel attacks.
    (CVE-2018-3639)

Note: This is the libvirt side of the CVE-2018-3639 mitigation that
includes support for guests running on hosts with AMD processors.

Bug Fix(es) :

  - Previously, the virtlogd service logged redundant AVC
    denial errors when a guest virtual machine was started.
    With this update, the virtlogd service no longer
    attempts to send shutdown inhibition calls to systemd,
    which prevents the described errors from occurring.

  - Prior to this update, guest virtual machine actions that
    use a python library in some cases failed and 'Hash
    operation not allowed during iteration' error messages
    were logged. Several redundant thread access checks have
    been removed, and the problem no longer occurs.

  - The 'virsh capabilities' command previously displayed an
    inaccurate number of 4 KiB memory pages on systems with
    very large amounts of memory. This update optimizes the
    memory diagnostic mechanism to ensure memory page
    numbers are displayed correctly on such systems."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1806&L=scientific-linux-errata&F=&S=&P=4588
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?7ed35270"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-admin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-config-network");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-config-nwfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-interface");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-lxc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-network");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-nodedev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-nwfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-secret");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-storage");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-storage-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-storage-disk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-storage-gluster");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-storage-iscsi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-storage-logical");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-storage-mpath");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-storage-rbd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-driver-storage-scsi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-daemon-lxc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-lock-sanlock");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-login-shell");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:libvirt-nss");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/05/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/06/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/06/27");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

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

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 7.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

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


flag = 0;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-admin-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-client-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-config-network-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-config-nwfilter-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-interface-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-lxc-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-network-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-nodedev-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-nwfilter-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-qemu-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-secret-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-core-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-disk-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-gluster-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-iscsi-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-logical-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-mpath-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-rbd-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-scsi-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-kvm-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-daemon-lxc-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-debuginfo-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-devel-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-docs-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-libs-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-lock-sanlock-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-login-shell-3.9.0-14.el7_5.6")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libvirt-nss-3.9.0-14.el7_5.6")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_NOTE,
    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, "libvirt / libvirt-admin / libvirt-client / libvirt-daemon / etc");
}