Amazon Linux 2 : libvirt (ALAS-2018-1134)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2 Security Advisory ALAS-2018-1134.
#

include("compat.inc");

if (description)
{
  script_id(119788);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/27");

  script_cve_id("CVE-2018-6764");
  script_xref(name:"ALAS", value:"2018-1134");

  script_name(english:"Amazon Linux 2 : libvirt (ALAS-2018-1134)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux 2 host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"util/virlog.c in libvirt does not properly determine the hostname on
LXC container startup, which allows local guest OS users to bypass an
intended container protection mechanism and execute arbitrary commands
via a crafted NSS module.(CVE-2018-6764)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/AL2/ALAS-2018-1134.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update libvirt' to update your system."
  );
  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:L/AC:L/PR:L/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:amazon:linux:libvirt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-admin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-bash-completion");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-config-network");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-config-nwfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-interface");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-lxc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-network");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-nodedev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-nwfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-qemu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-secret");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-storage");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-storage-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-storage-disk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-storage-gluster");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-storage-iscsi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-storage-logical");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-storage-mpath");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-storage-rbd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-driver-storage-scsi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-daemon-lxc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-lock-sanlock");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-login-shell");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvirt-nss");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/02/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/12/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/12/20");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/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/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "2")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux 2", "Amazon Linux " + os_ver);
}

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


flag = 0;
if (rpm_check(release:"AL2", reference:"libvirt-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-admin-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-bash-completion-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-client-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-config-network-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-config-nwfilter-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-interface-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-lxc-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-network-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-nodedev-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-nwfilter-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"libvirt-daemon-driver-qemu-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-secret-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-storage-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-storage-core-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-storage-disk-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-gluster-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-storage-iscsi-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-storage-logical-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-storage-mpath-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"libvirt-daemon-driver-storage-rbd-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-driver-storage-scsi-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"libvirt-daemon-kvm-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-daemon-lxc-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-debuginfo-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-devel-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-docs-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-libs-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", cpu:"x86_64", reference:"libvirt-lock-sanlock-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-login-shell-4.5.0-10.amzn2.3.1")) flag++;
if (rpm_check(release:"AL2", reference:"libvirt-nss-4.5.0-10.amzn2.3.1")) 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, "libvirt / libvirt-admin / libvirt-bash-completion / libvirt-client / etc");
}