Vulnerabilities > CVE-2012-0217 - Buffer Errors vulnerability in Freebsd

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-2501. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(59779);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2012-0217", "CVE-2012-0218", "CVE-2012-2934");
  script_bugtraq_id(53856, 53955, 53961);
  script_xref(name:"DSA", value:"2501");

  script_name(english:"Debian DSA-2501-1 : xen - several vulnerabilities");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several vulnerabilities were discovered in Xen, a hypervisor.

  - CVE-2012-0217
    Xen does not properly handle uncanonical return
    addresses on Intel amd64 CPUs, allowing amd64 PV guests
    to elevate to hypervisor privileges. AMD processors, HVM
    and i386 guests are not affected.

  - CVE-2012-0218
    Xen does not properly handle SYSCALL and SYSENTER
    instructions in PV guests, allowing unprivileged users
    inside a guest system to crash the guest system.

  - CVE-2012-2934
    Xen does not detect old AMD CPUs affected by AMD Erratum
    #121.

For CVE-2012-2934, Xen refuses to start domUs on affected systems
unless the 'allow_unsafe' option is passed."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2012-0217"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2012-0218"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2012-2934"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2012-2934"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/xen"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2012/dsa-2501"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the xen packages.

For the stable distribution (squeeze), these problems have been fixed
in version 4.0.1-5.2."
  );
  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:H/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'FreeBSD Intel SYSRET Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xen");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/06/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/06/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/06/29");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"6.0", prefix:"libxen-dev", reference:"4.0.1-5.2")) flag++;
if (deb_check(release:"6.0", prefix:"libxenstore3.0", reference:"4.0.1-5.2")) flag++;
if (deb_check(release:"6.0", prefix:"xen-docs-4.0", reference:"4.0.1-5.2")) flag++;
if (deb_check(release:"6.0", prefix:"xen-hypervisor-4.0-amd64", reference:"4.0.1-5.2")) flag++;
if (deb_check(release:"6.0", prefix:"xen-hypervisor-4.0-i386", reference:"4.0.1-5.2")) flag++;
if (deb_check(release:"6.0", prefix:"xen-utils-4.0", reference:"4.0.1-5.2")) flag++;
if (deb_check(release:"6.0", prefix:"xenstore-utils", reference:"4.0.1-5.2")) flag++;

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

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201309-24.
#
# The advisory text is Copyright (C) 2001-2019 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(70184);
  script_version("1.15");
  script_cvs_date("Date: 2019/08/12 17:35:38");

  script_cve_id("CVE-2011-2901", "CVE-2011-3262", "CVE-2012-0217", "CVE-2012-0218", "CVE-2012-2934", "CVE-2012-3432", "CVE-2012-3433", "CVE-2012-3494", "CVE-2012-3495", "CVE-2012-3496", "CVE-2012-3497", "CVE-2012-3498", "CVE-2012-3515", "CVE-2012-4411", "CVE-2012-4535", "CVE-2012-4536", "CVE-2012-4537", "CVE-2012-4538", "CVE-2012-4539", "CVE-2012-5510", "CVE-2012-5511", "CVE-2012-5512", "CVE-2012-5513", "CVE-2012-5514", "CVE-2012-5515", "CVE-2012-5525", "CVE-2012-5634", "CVE-2012-6030", "CVE-2012-6031", "CVE-2012-6032", "CVE-2012-6033", "CVE-2012-6034", "CVE-2012-6035", "CVE-2012-6036", "CVE-2012-6075", "CVE-2012-6333", "CVE-2013-0151", "CVE-2013-0152", "CVE-2013-0153", "CVE-2013-0154", "CVE-2013-0215", "CVE-2013-1432", "CVE-2013-1917", "CVE-2013-1918", "CVE-2013-1919", "CVE-2013-1920", "CVE-2013-1922", "CVE-2013-1952", "CVE-2013-1964", "CVE-2013-2076", "CVE-2013-2077", "CVE-2013-2078", "CVE-2013-2194", "CVE-2013-2195", "CVE-2013-2196", "CVE-2013-2211");
  script_bugtraq_id(49370, 53856, 53955, 53961, 54691, 54942, 55400, 55406, 55410, 55412, 55413, 55414, 55442, 56498, 56794, 56796, 56797, 56798, 56799, 56803, 56805, 57159, 57223, 57420, 57494, 57495, 57742, 57745, 58880, 59070, 59291, 59292, 59293, 59615, 59617, 60277, 60278, 60282, 60701, 60702, 60703, 60721, 60799);
  script_xref(name:"GLSA", value:"201309-24");

  script_name(english:"GLSA-201309-24 : Xen: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-201309-24
(Xen: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Xen. Please review the
      CVE identifiers referenced below for details.
  
Impact :

    Guest domains could possibly gain privileges, execute arbitrary code, or
      cause a Denial of Service on the host domain (Dom0). Additionally, guest
      domains could gain information about other virtual machines running on
      the same host or read arbitrary files on the host.
  
Workaround :

    The CVEs listed below do not currently have fixes, but only apply to Xen
      setups which have “tmem” specified on the hypervisor command line.
      TMEM is not currently supported for use in production systems, and
      administrators using tmem should disable it.
      Relevant CVEs:
      * CVE-2012-2497
      * CVE-2012-6030
      * CVE-2012-6031
      * CVE-2012-6032
      * CVE-2012-6033
      * CVE-2012-6034
      * CVE-2012-6035
      * CVE-2012-6036"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.xen.org/archives/html/xen-announce/2012-09/msg00006.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201309-24"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All Xen users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=app-emulation/xen-4.2.2-r1'
    All Xen-tools users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose
      '>=app-emulation/xen-tools-4.2.2-r3'
    All Xen-pvgrub users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose
      '>=app-emulation/xen-pvgrub-4.2.2-r1'"
  );
  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:H/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'FreeBSD Intel SYSRET Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:xen-pvgrub");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:xen-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2011/08/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/09/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/09/28");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"app-emulation/xen-pvgrub", unaffected:make_list("ge 4.2.2-r1"), vulnerable:make_list("lt 4.2.2-r1"))) flag++;
if (qpkg_check(package:"app-emulation/xen", unaffected:make_list("ge 4.2.2-r1"), vulnerable:make_list("lt 4.2.2-r1"))) flag++;
if (qpkg_check(package:"app-emulation/xen-tools", unaffected:make_list("ge 4.2.2-r3"), vulnerable:make_list("lt 4.2.2-r3"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Xen");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2012-9430.
#

include("compat.inc");

if (description)
{
  script_id(59696);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_xref(name:"FEDORA", value:"2012-9430");

  script_name(english:"Fedora 15 : xen-4.1.2-8.fc15 (2012-9430)");
  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:
"make pygrub cope better with big files from guest (#818412
CVE-2012-2625), 64-bit PV guest privilege escalation vulnerability
[CVE-2012-0217], guest denial of service on syscall/sysenter exception
generation [CVE-2012-0218], PV guest host Denial of Service
[CVE-2012-2934]

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."
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2012-June/082752.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ebc2ae1d"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected xen package.");
  script_set_attribute(attribute:"risk_factor", value:"High");

  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:15");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/06/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/06/26");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2020 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:"^15([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 15.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:"FC15", reference:"xen-4.1.2-8.fc15")) flag++;


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