CentOS 5 : kvm (CESA-2013:0608)

2013-03-10T00:00:00
ID CENTOS_RHSA-2013-0608.NASL
Type nessus
Reporter Tenable
Modified 2015-05-19T00:00:00

Description

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

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. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel.

A flaw was found in the way QEMU-KVM emulated the e1000 network interface card when the host was configured to accept jumbo network frames, and a guest using the e1000 emulated driver was not. A remote attacker could use this flaw to crash the guest or, potentially, execute arbitrary code with root privileges in the guest. (CVE-2012-6075)

All users of kvm are advised to upgrade to these updated packages, which contain backported patches to correct this issue. Note that the procedure in the Solution section must be performed before this update will take effect.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2013:0608 and 
# CentOS Errata and Security Advisory 2013:0608 respectively.
#

include("compat.inc");

if (description)
{
  script_id(65164);
  script_version("$Revision: 1.4 $");
  script_cvs_date("$Date: 2015/05/19 23:52:01 $");

  script_cve_id("CVE-2012-6075");
  script_bugtraq_id(57420);
  script_xref(name:"RHSA", value:"2013:0608");

  script_name(english:"CentOS 5 : kvm (CESA-2013:0608)");
  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 kvm packages that fix one security issue are now available for
Red Hat Enterprise Linux 5.

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. KVM is a Linux kernel module
built for the standard Red Hat Enterprise Linux kernel.

A flaw was found in the way QEMU-KVM emulated the e1000 network
interface card when the host was configured to accept jumbo network
frames, and a guest using the e1000 emulated driver was not. A remote
attacker could use this flaw to crash the guest or, potentially,
execute arbitrary code with root privileges in the guest.
(CVE-2012-6075)

All users of kvm are advised to upgrade to these updated packages,
which contain backported patches to correct this issue. Note that the
procedure in the Solution section must be performed before this update
will take effect."
  );
  # http://lists.centos.org/pipermail/centos-announce/2013-March/019270.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?58a0cd56"
  );
  # http://lists.centos.org/pipermail/centos-announce/2013-March/019272.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?68d46490"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected kvm packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:ND");
  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:kmod-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kmod-kvm-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kvm-qemu-img");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kvm-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:5");

  script_set_attribute(attribute:"patch_publication_date", value:"2013/03/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/03/10");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2015 Tenable Network Security, Inc.");
  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);
if (!get_kb_item("Host/CentOS/release")) audit(AUDIT_OS_NOT, "CentOS");
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-5", cpu:"x86_64", reference:"kmod-kvm-83-262.el5.centos.1")) flag++;
if (rpm_check(release:"CentOS-5", cpu:"x86_64", reference:"kmod-kvm-debug-83-262.el5.centos.1")) flag++;
if (rpm_check(release:"CentOS-5", cpu:"x86_64", reference:"kvm-83-262.el5.centos.1")) flag++;
if (rpm_check(release:"CentOS-5", cpu:"x86_64", reference:"kvm-qemu-img-83-262.el5.centos.1")) flag++;
if (rpm_check(release:"CentOS-5", cpu:"x86_64", reference:"kvm-tools-83-262.el5.centos.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");