Fedora 18 : xen-4.2.0-4.fc18 (2012-18146)

2012-11-26T00:00:00
ID FEDORA_2012-18146.NASL
Type nessus
Reporter This script is Copyright (C) 2012-2015 Tenable Network Security, Inc.
Modified 2020-02-02T00:00:00

Description

A guest can block a cpu by setting a bad VCPU deadline [XSA 20, CVE-2012-4535] (#876198) HVM guest can exhaust p2m table crashing xen [XSA 22, CVE-2012-4537] (#876203) PAE HVM guest can crash hypervisor [XSA-23, CVE-2012-4538] (#876205) 32-bit PV guest on 64-bit hypervisor can cause an hypervisor infinite loop [XSA-24, CVE-2012-4539] (#876207)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2012-18146.
#

include("compat.inc");

if (description)
{
  script_id(63032);
  script_version("$Revision: 1.6 $");
  script_cvs_date("$Date: 2015/10/20 22:34:53 $");

  script_cve_id("CVE-2012-4535", "CVE-2012-4537", "CVE-2012-4538", "CVE-2012-4539");
  script_xref(name:"FEDORA", value:"2012-18146");

  script_name(english:"Fedora 18 : xen-4.2.0-4.fc18 (2012-18146)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A guest can block a cpu by setting a bad VCPU deadline [XSA 20,
CVE-2012-4535] (#876198) HVM guest can exhaust p2m table crashing xen
[XSA 22, CVE-2012-4537] (#876203) PAE HVM guest can crash hypervisor
[XSA-23, CVE-2012-4538] (#876205) 32-bit PV guest on 64-bit hypervisor
can cause an hypervisor infinite loop [XSA-24, CVE-2012-4539]
(#876207)

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=870086"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=870101"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=870106"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=870110"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2012-November/092705.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4fcb3625"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected xen package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:xen");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:18");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/11/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/11/26");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2015 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^18([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 18.x", "Fedora " + 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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC18", reference:"xen-4.2.0-4.fc18")) flag++;


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