SuSE 10 Security Update : Xen (ZYPP Patch Number 7703)

2011-10-24T00:00:00
ID SUSE_XEN-201108-7703.NASL
Type nessus
Reporter Tenable
Modified 2014-01-09T00:00:00

Description

This update fixes various bugs in XEN :

The following security issues have been fixed :

  • A denial of service (Host Crash) in the XEN hypervisor. (CVE-2011-2901)

  • A bug was found in the way Xen handles CPUID instruction emulation during VM exits. An unprivileged guest user can potentially use this flaw to crash the guest. (CVE-2011-1936)

  • A 64-bit guest can get one of its vcpus into non-kernel mode without first providing a valid non-kernel pagetable. The observed failure mode was usually a hard lockup of the host (host denial of service). (CVE-2011-1166)

It fixes also the following bugs :

  • SLES 10 SP3 XEN: Device /dev/xvdp is already connected error when starting multiple vm's. (bnc#654798)

  • HVM taking too long to dump vmcore. (bnc#684297)

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The text description of this plugin is (C) Novell, Inc.
#

include("compat.inc");

if (description)
{
  script_id(56618);
  script_version ("$Revision: 1.7 $");
  script_cvs_date("$Date: 2014/01/09 11:40:37 $");

  script_cve_id("CVE-2011-1166", "CVE-2011-1936", "CVE-2011-2901");

  script_name(english:"SuSE 10 Security Update : Xen (ZYPP Patch Number 7703)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SuSE 10 host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update fixes various bugs in XEN :

The following security issues have been fixed :

  - A denial of service (Host Crash) in the XEN hypervisor.
    (CVE-2011-2901)

  - A bug was found in the way Xen handles CPUID instruction
    emulation during VM exits. An unprivileged guest user
    can potentially use this flaw to crash the guest.
    (CVE-2011-1936)

  - A 64-bit guest can get one of its vcpus into non-kernel
    mode without first providing a valid non-kernel
    pagetable. The observed failure mode was usually a hard
    lockup of the host (host denial of service).
    (CVE-2011-1166)

It fixes also the following bugs :

  - SLES 10 SP3 XEN: Device /dev/xvdp is already connected
    error when starting multiple vm's. (bnc#654798)

  - HVM taking too long to dump vmcore. (bnc#684297)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2011-1166.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2011-1936.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2011-2901.html"
  );
  script_set_attribute(attribute:"solution", value:"Apply ZYPP patch number 7703.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:S/C:N/I:N/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:suse:suse_linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/08/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/10/24");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2011-2014 Tenable Network Security, Inc.");
  script_family(english:"SuSE Local Security Checks");

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

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) exit(0, "Local checks are not enabled.");
if (!get_kb_item("Host/SuSE/release")) exit(0, "The host is not running SuSE.");
if (!get_kb_item("Host/SuSE/rpm-list")) exit(1, "Could not obtain the list of installed packages.");

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) exit(1, "Failed to determine the architecture type.");
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") exit(1, "Local checks for SuSE 10 on the '"+cpu+"' architecture have not been implemented.");


flag = 0;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-3.2.3_17040_26-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-devel-3.2.3_17040_26-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-doc-html-3.2.3_17040_26-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-doc-pdf-3.2.3_17040_26-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-doc-ps-3.2.3_17040_26-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-kmp-debug-3.2.3_17040_26_2.6.16.60_0.81.11-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-kmp-default-3.2.3_17040_26_2.6.16.60_0.81.11-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-kmp-kdump-3.2.3_17040_26_2.6.16.60_0.81.11-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-kmp-smp-3.2.3_17040_26_2.6.16.60_0.81.11-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-libs-3.2.3_17040_26-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-tools-3.2.3_17040_26-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-tools-domU-3.2.3_17040_26-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, reference:"xen-tools-ioemu-3.2.3_17040_26-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, cpu:"i586", reference:"xen-kmp-bigsmp-3.2.3_17040_26_2.6.16.60_0.81.11-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, cpu:"i586", reference:"xen-kmp-kdumppae-3.2.3_17040_26_2.6.16.60_0.81.11-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, cpu:"i586", reference:"xen-kmp-vmi-3.2.3_17040_26_2.6.16.60_0.81.11-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, cpu:"i586", reference:"xen-kmp-vmipae-3.2.3_17040_26_2.6.16.60_0.81.11-0.6.2.1")) flag++;
if (rpm_check(release:"SLES10", sp:3, cpu:"x86_64", reference:"xen-libs-32bit-3.2.3_17040_26-0.6.2.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else exit(0, "The host is not affected.");