CentOS 6 : qemu-kvm (CESA-2013:1100)

#%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-2013:1100 and 
# CentOS Errata and Security Advisory 2013:1100 respectively.
#

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

if (description)
{
  script_id(69022);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2013-2231");
  script_bugtraq_id(61388);
  script_xref(name:"RHSA", value:"2013:1100");

  script_name(english:"CentOS 6 : qemu-kvm (CESA-2013:1100)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated qemu-kvm packages that fix one security issue are now
available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team 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. qemu-kvm is the user-space
component for running virtual machines using KVM.

An unquoted search path flaw was found in the way the QEMU Guest Agent
service installation was performed on Windows. Depending on the
permissions of the directories in the unquoted search path, a local,
unprivileged user could use this flaw to have a binary of their
choosing executed with SYSTEM privileges. (CVE-2013-2231)

This issue was discovered by Lev Veyde of Red Hat.

All users of qemu-kvm should upgrade to these updated packages, which
contain backported patches to correct this issue. After installing
this update, shut down all running virtual machines. Once all virtual
machines have shut down, start them again for this update to take
effect."
  );
  # https://lists.centos.org/pipermail/centos-announce/2013-July/019874.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?d0a1c78b"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected qemu-kvm packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:ND");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2013-2231");
  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:centos:centos:qemu-guest-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:qemu-guest-agent-win32");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:qemu-img");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:qemu-kvm-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/10/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/07/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/07/24");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 6.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/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, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-6", reference:"qemu-guest-agent-0.12.1.2-2.355.0.1.el6.centos.6")) flag++;
if (rpm_check(release:"CentOS-6", cpu:"x86_64", reference:"qemu-guest-agent-win32-0.12.1.2-2.355.0.1.el6.centos.6")) flag++;
if (rpm_check(release:"CentOS-6", cpu:"x86_64", reference:"qemu-img-0.12.1.2-2.355.0.1.el6.centos.6")) flag++;
if (rpm_check(release:"CentOS-6", cpu:"x86_64", reference:"qemu-kvm-0.12.1.2-2.355.0.1.el6.centos.6")) flag++;
if (rpm_check(release:"CentOS-6", cpu:"x86_64", reference:"qemu-kvm-tools-0.12.1.2-2.355.0.1.el6.centos.6")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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, "qemu-guest-agent / qemu-guest-agent-win32 / qemu-img / qemu-kvm / etc");
}