SUSE SLES11 Security Update : kernel (SUSE-SU-2017:1628-1) (Stack Clash)

#%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-2017:1628-1.
# The text itself is copyright (C) SUSE.
#

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

if (description)
{
  script_id(100954);
  script_version("3.17");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2017-1000364");

  script_name(english:"SUSE SLES11 Security Update : kernel (SUSE-SU-2017:1628-1) (Stack Clash)");
  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 11 SP4 kernel was updated to receive various
security and bugfixes. The following security bugs were fixed :

  - CVE-2017-1000364: The default stack guard page was too
    small and could be 'jumped over' by userland programs
    using more than one page of stack in functions and so
    lead to memory corruption. This update extends the stack
    guard page to 1 MB (for 4k pages) and 16 MB (for 64k
    pages) to reduce this attack vector. This is not a
    kernel bugfix, but a hardening measure against this kind
    of userland attack.(bsc#1039348)

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=1018074"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1035920"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1039348"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1042921"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1043234"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-1000364/"
  );
  # https://www.suse.com/support/update/announcement/2017/suse-su-20171628-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?86a5c7f1"
  );
  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 Software Development Kit 11-SP4:zypper in -t
patch sdksp4-kernel-13160=1

SUSE Linux Enterprise Server 11-SP4:zypper in -t patch
slessp4-kernel-13160=1

SUSE Linux Enterprise Server 11-EXTRA:zypper in -t patch
slexsp3-kernel-13160=1

SUSE Linux Enterprise Debuginfo 11-SP4:zypper in -t patch
dbgsp4-kernel-13160=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:C/I:C/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:H/PR:N/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:"metasploit_name", value:'rsh_stack_clash_priv_esc.rb');
  script_set_attribute(attribute:"exploit_framework_metasploit", 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-devel");
  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-ec2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-ec2-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-ec2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-pae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-pae-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-pae-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-source");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-syms");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-trace");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-trace-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-trace-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-xen-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-xen-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/06/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/06/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/06/21");
  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) 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:"^(SLES11)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES11", "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 == "SLES11" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP4", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES11", sp:"4", cpu:"x86_64", reference:"kernel-ec2-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"x86_64", reference:"kernel-ec2-base-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"x86_64", reference:"kernel-ec2-devel-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"x86_64", reference:"kernel-xen-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"x86_64", reference:"kernel-xen-base-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"x86_64", reference:"kernel-xen-devel-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"x86_64", reference:"kernel-pae-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"x86_64", reference:"kernel-pae-base-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"x86_64", reference:"kernel-pae-devel-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"s390x", reference:"kernel-default-man-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"kernel-default-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"kernel-default-base-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"kernel-default-devel-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"kernel-source-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"kernel-syms-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"kernel-trace-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"kernel-trace-base-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"kernel-trace-devel-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"i586", reference:"kernel-ec2-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"i586", reference:"kernel-ec2-base-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"i586", reference:"kernel-ec2-devel-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"i586", reference:"kernel-xen-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"i586", reference:"kernel-xen-base-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"i586", reference:"kernel-xen-devel-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"i586", reference:"kernel-pae-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"i586", reference:"kernel-pae-base-3.0.101-104.2")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"i586", reference:"kernel-pae-devel-3.0.101-104.2")) 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, "kernel");
}