OracleVM 3.4 : qemu-kvm (OVMSA-2017-0047)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from OracleVM
# Security Advisory OVMSA-2017-0047.
#

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

if (description)
{
  script_id(97486);
  script_version("3.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/31");

  script_cve_id("CVE-2017-2620");

  script_name(english:"OracleVM 3.4 : qemu-kvm (OVMSA-2017-0047)");

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

  - kvm-cirrus-fix-patterncopy-checks.patch [bz#1420486
    bz#1420488]

  -
    kvm-Revert-cirrus-allow-zero-source-pitch-in-pattern-fil
    .patch 

  -
    kvm-cirrus-add-blit_is_unsafe-call-to-cirrus_bitblt_cput
    .patch 

  - Resolves: bz#1420486 (EMBARGOED CVE-2017-2620 qemu-kvm:
    Qemu: display: cirrus: potential arbitrary code
    execution via cirrus_bitblt_cputovideo [rhel-6.8.z])

  - Resolves: bz#1420488 (EMBARGOED CVE-2017-2620
    qemu-kvm-rhev: Qemu: display: cirrus: potential
    arbitrary code execution via cirrus_bitblt_cputovideo
    [rhel-6.8.z])");
  # https://oss.oracle.com/pipermail/oraclevm-errata/2017-March/000656.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1b39d0a6");
  script_set_attribute(attribute:"solution", value:
"Update the affected qemu-img package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-2620");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/07/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/03/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/03/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:qemu-img");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.4");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2017-2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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:"qemu-img-0.12.1.2-2.491.el6_8.7")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-img");
}