SUSE SLES12 Security Update : xen (SUSE-SU-2017:1080-1)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2017:1080-1.
# The text itself is copyright (C) SUSE.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(99579);
  script_version("3.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2016-9603", "CVE-2017-2633", "CVE-2017-6414", "CVE-2017-6505", "CVE-2017-7228");

  script_name(english:"SUSE SLES12 Security Update : xen (SUSE-SU-2017:1080-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for xen fixes the following issues: These security issues
were fixed :

  - CVE-2017-7228: Broken check in memory_exchange()
    permited PV guest breakout (bsc#1030442).

  - XSA-206: Unprivileged guests issuing writes to xenstore
    were able to stall progress of the control domain or
    driver domain, possibly leading to a Denial of Service
    (DoS) of the entire host (bsc#1030144).

  - CVE-2017-6505: The ohci_service_ed_list function in
    hw/usb/hcd-ohci.c allowed local guest OS users to cause
    a denial of service (infinite loop) via vectors
    involving the number of link endpoint list descriptors
    (bsc#1028235).

  - CVE-2017-6414: Memory leak in the vcard_apdu_new
    function in card_7816.c in libcacard allowed local guest
    OS users to cause a denial of service (host memory
    consumption) via vectors related to allocating a new
    APDU object (bsc#1027570).

  - CVE-2017-2633: The VNC display driver support was
    vulnerable to an out-of-bounds memory access issue. A
    user/process inside guest could use this flaw to cause
    DoS (bsc#1026636).

  - CVE-2016-9603: A privileged user within the guest VM can
    cause a heap overflow in the device model process,
    potentially escalating their privileges to that of the
    device model process (bsc#1028655).

The update package also includes non-security fixes. See advisory for
details.

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE 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.suse.com/show_bug.cgi?id=1022555"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1026636"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1027519"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1027570"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1028235"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1028655"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1029827"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1030144"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1030442"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-9603/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-2633/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-6414/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-6505/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-7228/"
  );
  # https://www.suse.com/support/update/announcement/2017/suse-su-20171080-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?e66278b1"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server for SAP 12:zypper in -t patch
SUSE-SLE-SAP-12-2017-626=1

SUSE Linux Enterprise Server 12-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-2017-626=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-doc-html");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-kmp-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-libs-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:xen-tools-domU-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/03/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/04/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/04/21");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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("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, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES12", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);
if (cpu >!< "x86_64") audit(AUDIT_ARCH_NOT, "x86_64", cpu);


sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP0", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-4.4.4_16-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-debugsource-4.4.4_16-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-doc-html-4.4.4_16-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-kmp-default-4.4.4_16_k3.12.61_52.69-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-kmp-default-debuginfo-4.4.4_16_k3.12.61_52.69-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-32bit-4.4.4_16-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-4.4.4_16-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.4.4_16-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-libs-debuginfo-4.4.4_16-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-4.4.4_16-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-debuginfo-4.4.4_16-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-domU-4.4.4_16-22.36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", cpu:"x86_64", reference:"xen-tools-domU-debuginfo-4.4.4_16-22.36.1")) 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");
}