SUSE SLES12 Security Update : kernel (SUSE-SU-2018:2374-1) (Foreshadow)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:2374-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(111837);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/03/08");

  script_cve_id("CVE-2017-18344", "CVE-2018-14734", "CVE-2018-3620", "CVE-2018-3646", "CVE-2018-5390", "CVE-2018-5391");

  script_name(english:"SUSE SLES12 Security Update : kernel (SUSE-SU-2018:2374-1) (Foreshadow)");
  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:
"The SUSE Linux Enterprise 12 SP3 Azure kernel was updated to 4.4.143
to receive various security and bugfixes. The following security bugs
were fixed :

  - CVE-2018-3620: Local attackers on baremetal systems
    could use speculative code patterns on hyperthreaded
    processors to read data present in the L1 Datacache used
    by other hyperthreads on the same CPU core, potentially
    leaking sensitive data. (bnc#1087081).

  - CVE-2018-3646: Local attackers in virtualized guest
    systems could use speculative code patterns on
    hyperthreaded processors to read data present in the L1
    Datacache used by other hyperthreads on the same CPU
    core, potentially leaking sensitive data, even from
    other virtual machines or the host system.
    (bnc#1089343).

  - CVE-2018-5391: A flaw in the IP packet reassembly could
    be used by remote attackers to consume CPU time
    (bnc#1103097).

  - CVE-2018-5390: Linux kernel versions 4.9+ can be forced
    to make very expensive calls to tcp_collapse_ofo_queue()
    and tcp_prune_ofo_queue() for every incoming packet
    which can lead to a denial of service (bnc#1102340).

  - CVE-2018-14734: drivers/infiniband/core/ucma.c allowed
    ucma_leave_multicast to access a certain data structure
    after a cleanup step in ucma_process_join, which allowed
    attackers to cause a denial of service (use-after-free)
    (bnc#1103119).

  - CVE-2017-18344: The timer_create syscall implementation
    in kernel/time/posix-timers.c didn't properly validate
    the sigevent->sigev_notify field, which leads to
    out-of-bounds access in the show_timer function (called
    when /proc/$PID/timers is read). This allowed userspace
    applications to read arbitrary kernel memory (on a
    kernel built with CONFIG_POSIX_TIMERS and
    CONFIG_CHECKPOINT_RESTORE) (bnc#1102851 1103580).

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=1012382"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1023711"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1064232"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1076110"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1078216"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1082653"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1082979"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1085042"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1085536"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1085657"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1087081"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1087659"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1089343"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1089525"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1090123"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1090340"
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    value:"https://bugzilla.suse.com/show_bug.cgi?id=1090435"
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    value:"https://bugzilla.suse.com/show_bug.cgi?id=1090888"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1091107"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1092001"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1092207"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1093777"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1094120"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1094244"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1095453"
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  script_set_attribute(
    attribute:"see_also",
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1096790"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1096978"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1097034"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1097501"
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1097771"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1098599"
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    attribute:"see_also",
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1099713"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1099792"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1099810"
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  script_set_attribute(
    attribute:"see_also",
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    attribute:"see_also",
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    attribute:"see_also",
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    value:"https://bugzilla.suse.com/show_bug.cgi?id=1099993"
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    attribute:"see_also",
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    attribute:"see_also",
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1100843"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1100930"
  );
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1101296"
  );
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1101331"
  );
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    value:"https://bugzilla.suse.com/show_bug.cgi?id=1101658"
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    attribute:"see_also",
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102188"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102197"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102203"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102205"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102207"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102211"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102214"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102215"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102340"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102394"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102683"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1102851"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1103097"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1103119"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1103580"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1103717"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1103745"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1103884"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1104174"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=997935"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-18344/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-14734/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-3620/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-3646/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-5390/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-5391/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20182374-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?710f5d74"
  );
  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 Linux Enterprise Software Development Kit 12-SP3:zypper in -t
patch SUSE-SLE-SDK-12-SP3-2018-1606=1

SUSE Linux Enterprise Server 12-SP3:zypper in -t patch
SUSE-SLE-SERVER-12-SP3-2018-1606=1"
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  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC: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_cvss3_temporal_vector("CVSS:3.0/E:F/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:"exploited_by_malware", 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:novell:suse_linux:kernel-azure");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-azure-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-azure-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/07/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/17");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2021 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:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP3", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-4.4.143-4.13.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-base-4.4.143-4.13.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-base-debuginfo-4.4.143-4.13.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-debuginfo-4.4.143-4.13.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-debugsource-4.4.143-4.13.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", cpu:"x86_64", reference:"kernel-azure-devel-4.4.143-4.13.1")) 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, "kernel");
}