SUSE SLES12 Security Update : xen (SUSE-SU-2020:0334-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2020:0334-1.
# The text itself is copyright (C) SUSE.
#

include('compat.inc');

if (description)
{
  script_id(133539);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/27");

  script_cve_id(
    "CVE-2018-12207",
    "CVE-2019-11135",
    "CVE-2019-18420",
    "CVE-2019-18421",
    "CVE-2019-18424",
    "CVE-2019-18425",
    "CVE-2019-19577",
    "CVE-2019-19578",
    "CVE-2019-19579",
    "CVE-2019-19580",
    "CVE-2019-19581",
    "CVE-2019-19583",
    "CVE-2020-7211"
  );
  script_xref(name:"IAVB", value:"2019-B-0091-S");

  script_name(english:"SUSE SLES12 Security Update : xen (SUSE-SU-2020:0334-1)");

  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 :

CVE-2020-7211: potential directory traversal using relative paths via
tftp server on Windows host (bsc#1161181).

CVE-2019-19579: Device quarantine for alternate pci assignment methods
(bsc#1157888).

CVE-2019-19581: find_next_bit() issues (bsc#1158003).

CVE-2019-19583: VMentry failure with debug exceptions and blocked
states (bsc#1158004).

CVE-2019-19578: Linear pagetable use / entry miscounts (bsc#1158005).

CVE-2019-19580: Further issues with restartable PV type change
operations (bsc#1158006).

CVE-2019-19577: dynamic height for the IOMMU pagetables (bsc#1158007).

CVE-2019-18420: VCPUOP_initialise DoS (bsc#1154448).

CVE-2019-18425: missing descriptor table limit checking in x86 PV
emulation (bsc#1154456).

CVE-2019-18421: Issues with restartable PV type change operations
(bsc#1154458).

CVE-2019-18424: passed through PCI devices may corrupt host memory
after deassignment (bsc#1154461).

CVE-2018-12207: Machine Check Error Avoidance on Page Size Change (aka
IFU issue) (bsc#1155945).

CVE-2019-11135: TSX Asynchronous Abort (TAA) issue (bsc#1152497).

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=1152497");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1154448");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1154456");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1154458");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1154461");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1155945");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1157888");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1158003");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1158004");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1158005");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1158006");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1158007");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1161181");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-12207/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-11135/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-18420/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-18421/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-18424/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-18425/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-19577/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-19578/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-19579/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-19580/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-19581/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-19583/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-7211/");
  # https://www.suse.com/support/update/announcement/2020/suse-su-20200334-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?84dc9ed4");
  script_set_attribute(attribute:"solution", value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE OpenStack Cloud 7 :

zypper in -t patch SUSE-OpenStack-Cloud-7-2020-334=1

SUSE Linux Enterprise Server for SAP 12-SP2 :

zypper in -t patch SUSE-SLE-SAP-12-SP2-2020-334=1

SUSE Linux Enterprise Server 12-SP2-LTSS :

zypper in -t patch SUSE-SLE-SERVER-12-SP2-2020-334=1

SUSE Linux Enterprise Server 12-SP2-BCL :

zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2020-334=1");
  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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-18425");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/02/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/07");

  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-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:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-4.7.6_06-43.59.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-debugsource-4.7.6_06-43.59.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-doc-html-4.7.6_06-43.59.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-libs-32bit-4.7.6_06-43.59.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-libs-4.7.6_06-43.59.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-libs-debuginfo-32bit-4.7.6_06-43.59.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-libs-debuginfo-4.7.6_06-43.59.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-tools-4.7.6_06-43.59.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-tools-debuginfo-4.7.6_06-43.59.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-tools-domU-4.7.6_06-43.59.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"xen-tools-domU-debuginfo-4.7.6_06-43.59.1")) 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");
}