OracleVM 3.1 : xen (OVMSA-2013-0071)

2014-11-26T00:00:00
ID ORACLEVM_OVMSA-2013-0071.NASL
Type nessus
Reporter Tenable
Modified 2017-02-14T00:00:00

Description

The remote OracleVM system is missing necessary patches to address critical security updates :

  • Rebuild correcting changelog

  • x86: properly set up fbld emulation operand address This is XSA-66. (CVE-2013-4361)

  • x86: properly handle hvm_copy_from_guest_[phys,virt] errors Ignoring them generally implies using uninitialized data and, in all cases dealt with here, potentially leaking hypervisor stack contents to guests. This is XSA-63. (CVE-2013-4355)

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from OracleVM
# Security Advisory OVMSA-2013-0071.
#

include("compat.inc");

if (description)
{
  script_id(79518);
  script_version("$Revision: 1.3 $");
  script_cvs_date("$Date: 2017/02/14 17:16:23 $");

  script_cve_id("CVE-2013-4355", "CVE-2013-4361");
  script_bugtraq_id(62708, 62710);

  script_name(english:"OracleVM 3.1 : xen (OVMSA-2013-0071)");
  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 :

  - Rebuild correcting changelog

  - x86: properly set up fbld emulation operand address This
    is XSA-66. (CVE-2013-4361)

  - x86: properly handle hvm_copy_from_guest_[phys,virt]
    errors Ignoring them generally implies using
    uninitialized data and, in all cases dealt with here,
    potentially leaking hypervisor stack contents to guests.
    This is XSA-63. (CVE-2013-4355)"
  );
  # https://oss.oracle.com/pipermail/oraclevm-errata/2013-September/000182.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?de5b73a6"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected xen / xen-devel / xen-tools 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:ND/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:xen-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:xen-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2013/09/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/26");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2017 Tenable Network Security, Inc.");
  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 (! ereg(pattern:"^OVS" + "3\.1" + "(\.[0-9]|$)", string:release)) audit(AUDIT_OS_NOT, "OracleVM 3.1", "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:"OVS3.1", reference:"xen-4.1.2-18.el5.111")) flag++;
if (rpm_check(release:"OVS3.1", reference:"xen-devel-4.1.2-18.el5.111")) flag++;
if (rpm_check(release:"OVS3.1", reference:"xen-tools-4.1.2-18.el5.111")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get());
  else security_note(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xen / xen-devel / xen-tools");
}