Vulnerabilities > CVE-2016-10025 - NULL Pointer Dereference vulnerability in multiple products

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2017-2.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(96250);
  script_version("3.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/10");

  script_cve_id("CVE-2016-10013", "CVE-2016-10024", "CVE-2016-10025", "CVE-2016-9932");
  script_xref(name:"IAVB", value:"2017-B-0008-S");

  script_name(english:"openSUSE Security Update : xen (openSUSE-2017-2)");
  script_summary(english:"Check for the openSUSE-2017-2 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for xen fixes the following issues :

  - A Mishandling of SYSCALL singlestep during emulation
    which could have lead to privilege escalation. (XSA-204,
    bsc#1016340, CVE-2016-10013)

  - CMPXCHG8B emulation failed to ignore operand size
    override which could have lead to information
    disclosure. (XSA-200, bsc#1012651, CVE-2016-9932)

  - PV guests may have been able to mask interrupts causing
    a Denial of Service. (XSA-202, bsc#1014298,
    CVE-2016-10024)

  - A missing NULL pointer check in VMFUNC emulation could
    lead to a hypervisor crash leading to a Denial of
    Servce. (XSA-203, bsc#1014300, CVE-2016-10025)

This update was imported from the SUSE:SLE-12-SP2:Update update
project."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1012651"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1014298"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1014300"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1016340"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected xen packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-doc-html");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-libs-debuginfo-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools-domU");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xen-tools-domU-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/01/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/01/03");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2020 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/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");

  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/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE42\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.2", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE42.2", reference:"xen-debugsource-4.7.1_04-6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xen-devel-4.7.1_04-6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xen-libs-4.7.1_04-6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xen-libs-debuginfo-4.7.1_04-6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xen-tools-domU-4.7.1_04-6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"xen-tools-domU-debuginfo-4.7.1_04-6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-4.7.1_04-6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-doc-html-4.7.1_04-6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-libs-32bit-4.7.1_04-6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.7.1_04-6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-tools-4.7.1_04-6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"xen-tools-debuginfo-4.7.1_04-6.1") ) 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-debugsource / xen-devel / xen-libs-32bit / xen-libs / etc");
}