RHEL 6 : qemu-kvm (RHSA-2013:1553)

#%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-2013:1553. The text 
# itself is copyright (C) Red Hat, Inc.
#

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

if (description)
{
  script_id(71004);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2013-4344");
  script_bugtraq_id(62773);
  script_xref(name:"RHSA", value:"2013:1553");

  script_name(english:"RHEL 6 : qemu-kvm (RHSA-2013:1553)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description",
    value:
"Updated qemu-kvm packages that fix one security issue, several bugs,
and add various enhancements 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 that is built into the
standard Red Hat Enterprise Linux kernel. The qemu-kvm packages form
the user-space component for running virtual machines using KVM.

A buffer overflow flaw was found in the way QEMU processed the SCSI
'REPORT LUNS' command when more than 256 LUNs were specified for a
single SCSI target. A privileged guest user could use this flaw to
corrupt QEMU process memory on the host, which could potentially
result in arbitrary code execution on the host with the privileges of
the QEMU process. (CVE-2013-4344)

This issue was discovered by Asias He of Red Hat.

These updated qemu-kvm packages include numerous bug fixes and various
enhancements. Space precludes documenting all of these changes in this
advisory. Users are directed to the Red Hat Enterprise Linux 6.5
Technical Notes, linked to in the References, for information on the
most significant of these changes.

All qemu-kvm users are advised to upgrade to these updated packages,
which contain backported patches to correct these issues and add these
enhancements. 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://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?c6b506c4"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2013:1553"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2013-4344"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected 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:U/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:redhat:enterprise_linux:qemu-guest-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-img");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/10/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/11/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/11/21");
  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:"Red Hat Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 6.x", "Red Hat " + 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 && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2013:1553";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"qemu-guest-agent-0.12.1.2-2.415.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-guest-agent-0.12.1.2-2.415.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-img-0.12.1.2-2.415.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-kvm-0.12.1.2-2.415.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"i686", reference:"qemu-kvm-debuginfo-0.12.1.2-2.415.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-kvm-debuginfo-0.12.1.2-2.415.el6")) flag++;
  if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-kvm-tools-0.12.1.2-2.415.el6")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    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-img / qemu-kvm / qemu-kvm-debuginfo / etc");
  }
}