SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:2051-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:2051-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(111329);
  script_version("1.5");
  script_cvs_date("Date: 2019/09/10 13:51:48");

  script_cve_id("CVE-2018-13053", "CVE-2018-13405", "CVE-2018-13406", "CVE-2018-9385");

  script_name(english:"SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:2051-1)");
  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:
"The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.140 to
receive various security and bugfixes. The following security bugs
were fixed :

  - CVE-2018-13053: The alarm_timer_nsleep function had an
    integer overflow via a large relative timeout because
    ktime_add_safe was not used (bnc#1099924)

  - CVE-2018-9385: Prevent overread of the 'driver_override'
    buffer (bsc#1100491)

  - CVE-2018-13405: The inode_init_owner function allowed
    local users to create files with an unintended group
    ownership allowing attackers to escalate privileges by
    making a plain file executable and SGID (bnc#1100416)

  - CVE-2018-13406: An integer overflow in the
    uvesafb_setcmap function could have result in local
    attackers being able to crash the kernel or potentially
    elevate privileges because kmalloc_array is not used
    (bnc#1100418)

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"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1064232"
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    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=1089525"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1090435"
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    attribute:"see_also",
    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=1091171"
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    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=1094244"
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    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1094248"
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    attribute:"see_also",
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1097140"
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  script_set_attribute(
    attribute:"see_also",
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  script_set_attribute(
    attribute:"see_also",
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  script_set_attribute(
    attribute:"see_also",
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  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1099713"
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  script_set_attribute(
    attribute:"see_also",
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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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    attribute:"see_also",
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  script_set_attribute(
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  script_set_attribute(
    attribute:"see_also",
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  );
  script_set_attribute(
    attribute:"see_also",
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    attribute:"see_also",
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  script_set_attribute(
    attribute:"see_also",
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  script_set_attribute(
    attribute:"see_also",
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  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-13406/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-9385/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20182051-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?32f591a4"
  );
  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 Workstation Extension 12-SP3:zypper in -t patch
SUSE-SLE-WE-12-SP3-2018-1385=1

SUSE Linux Enterprise Software Development Kit 12-SP3:zypper in -t
patch SUSE-SLE-SDK-12-SP3-2018-1385=1

SUSE Linux Enterprise Server 12-SP3:zypper in -t patch
SUSE-SLE-SERVER-12-SP3-2018-1385=1

SUSE Linux Enterprise Live Patching 12-SP3:zypper in -t patch
SUSE-SLE-Live-Patching-12-SP3-2018-1385=1

SUSE Linux Enterprise High Availability 12-SP3:zypper in -t patch
SUSE-SLE-HA-12-SP3-2018-1385=1

SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP3-2018-1385=1

SUSE CaaS Platform ALL :

To install this update, use the SUSE CaaS Platform Velum dashboard. It
will inform you if it detects new updates and let you then trigger
updating of the complete cluster in a controlled way.

SUSE CaaS Platform 3.0 :

To install this update, use the SUSE CaaS Platform Velum dashboard. It
will inform you if it detects new updates and let you then trigger
updating of the complete cluster in a controlled way."
  );
  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:POC/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: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:kernel-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-base-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-extra-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-man");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-syms");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/07/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/07/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 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:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / 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);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP3", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP3", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"3", cpu:"s390x", reference:"kernel-default-man-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"kernel-default-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"kernel-default-base-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"kernel-default-base-debuginfo-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"kernel-default-debuginfo-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"kernel-default-debugsource-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"kernel-default-devel-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"kernel-syms-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"kernel-default-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"kernel-default-debuginfo-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"kernel-default-debugsource-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"kernel-default-devel-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"kernel-default-extra-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"kernel-default-extra-debuginfo-4.4.140-94.42.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"kernel-syms-4.4.140-94.42.1")) 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");
}