Oracle Linux 5 : kvm (ELSA-2015-1003) (Venom)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2015:1003 and 
# Oracle Linux Security Advisory ELSA-2015-1003 respectively.
#

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

if (description)
{
  script_id(83447);
  script_version("2.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2015-3456");
  script_xref(name:"RHSA", value:"2015:1003");

  script_name(english:"Oracle Linux 5 : kvm (ELSA-2015-1003) (Venom)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2015:1003 :

Updated kvm packages that fix one security issue are now available for
Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having Important
security impact. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available from the
CVE link in the References section.

KVM (Kernel-based Virtual Machine) is a full virtualization solution
for Linux on AMD64 and Intel 64 systems.

An out-of-bounds memory access flaw was found in the way QEMU's
virtual Floppy Disk Controller (FDC) handled FIFO buffer access while
processing certain FDC commands. A privileged guest user could use
this flaw to crash the guest or, potentially, execute arbitrary code
on the host with the privileges of the host's QEMU process
corresponding to the guest. (CVE-2015-3456)

Red Hat would like to thank Jason Geffner of CrowdStrike for reporting
this issue.

All kvm users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. Note: The procedure
in the Solution section must be performed before this update will take
effect."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2015-May/005074.html"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected kvm packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kmod-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kmod-kvm-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kvm-qemu-img");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kvm-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:5");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/05/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/05/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/14");
  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) 2015-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/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);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 5", "Oracle 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 ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);

flag = 0;
if (rpm_check(release:"EL5", cpu:"x86_64", reference:"kmod-kvm-83-272.0.1.el5_11")) flag++;
if (rpm_check(release:"EL5", cpu:"x86_64", reference:"kmod-kvm-debug-83-272.0.1.el5_11")) flag++;
if (rpm_check(release:"EL5", cpu:"x86_64", reference:"kvm-83-272.0.1.el5_11")) flag++;
if (rpm_check(release:"EL5", cpu:"x86_64", reference:"kvm-qemu-img-83-272.0.1.el5_11")) flag++;
if (rpm_check(release:"EL5", cpu:"x86_64", reference:"kvm-tools-83-272.0.1.el5_11")) 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, "kmod-kvm / kmod-kvm-debug / kvm / kvm-qemu-img / kvm-tools");
}