Vulnerabilities > CVE-2017-13215 - Unspecified vulnerability in Google Android

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:0525-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(106967);
  script_version("3.7");
  script_cvs_date("Date: 2019/09/10 13:51:47");

  script_cve_id("CVE-2015-1142857", "CVE-2017-13215", "CVE-2017-17741", "CVE-2017-17805", "CVE-2017-17806", "CVE-2017-18079", "CVE-2017-5715", "CVE-2018-1000004");
  script_xref(name:"IAVA", value:"2018-A-0020");

  script_name(english:"SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0525-1) (Spectre)");
  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 SP1 LTSS kernel was updated to receive
various security and bugfixes. The following security bugs were 
fixed :

  - CVE-2017-5715: Systems with microprocessors utilizing
    speculative execution and indirect branch prediction may
    allow unauthorized disclosure of information to an
    attacker with local user access via a side-channel
    analysis (bnc#1068032). The previous fix using CPU
    Microcode has been complemented by building the Linux
    Kernel with return trampolines aka 'retpolines'.

  - CVE-2017-18079: drivers/input/serio/i8042.c allowed
    attackers to cause a denial of service (NULL pointer
    dereference and system crash) or possibly have
    unspecified other impact because the port->exists value
    can change after it is validated (bnc#1077922).

  - CVE-2015-1142857: Prevent guests from sending ethernet
    flow control pause frames via the PF (bnc#1077355).

  - CVE-2017-17741: KVM allowed attackers to obtain
    potentially sensitive information from kernel memory,
    aka a write_mmio stack-based out-of-bounds read
    (bnc#1073311).

  - CVE-2017-13215: Prevent elevation of privilege
    (bnc#1075908).

  - CVE-2018-1000004: Prevent race condition in the sound
    system, this could have lead a deadlock and denial of
    service condition (bnc#1076017).

  - CVE-2017-17806: The HMAC implementation did not validate
    that the underlying cryptographic hash algorithm is
    unkeyed, allowing a local attacker able to use the
    AF_ALG-based hash interface
    (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash
    algorithm (CONFIG_CRYPTO_SHA3) to cause a kernel
    stack-based buffer overflow by executing a crafted
    sequence of system calls that encounter a missing SHA-3
    initialization (bnc#1073874).

  - CVE-2017-17805: The Salsa20 encryption algorithm did not
    correctly handle zero-length inputs, allowing a local
    attacker able to use the AF_ALG-based skcipher interface
    (CONFIG_CRYPTO_USER_API_SKCIPHER) to cause a denial of
    service (uninitialized-memory free and kernel crash) or
    have unspecified other impact by executing a crafted
    sequence of system calls that use the blkcipher_walk
    API. Both the generic implementation
    (crypto/salsa20_generic.c) and x86 implementation
    (arch/x86/crypto/salsa20_glue.c) of Salsa20 were
    vulnerable (bnc#1073792).

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=1047118"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1047626"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1068032"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1070623"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1073246"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1073311"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1073792"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1073874"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1074709"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1075091"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1075411"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1075908"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1075994"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1076017"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1076110"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1076154"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1076278"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1077182"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1077355"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1077560"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1077922"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1081317"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=893777"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=893949"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=902893"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=951638"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-1142857/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-13215/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-17741/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-17805/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-17806/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-18079/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-5715/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-1000004/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20180525-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?89189945"
  );
  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 OpenStack Cloud 6:zypper in -t patch
SUSE-OpenStack-Cloud-6-2018-348=1

SUSE Linux Enterprise Server for SAP 12-SP1:zypper in -t patch
SUSE-SLE-SAP-12-SP1-2018-348=1

SUSE Linux Enterprise Server 12-SP1-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-SP1-2018-348=1

SUSE Linux Enterprise Module for Public Cloud 12:zypper in -t patch
SUSE-SLE-Module-Public-Cloud-12-2018-348=1

To bring your system up-to-date, use 'zypper patch'."
  );
  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:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/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:"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-man");
  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-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-base-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-xen-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-xen-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-xen-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_74-60_64_82-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_74-60_64_82-xen");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/12/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/02/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/23");
  script_set_attribute(attribute:"in_the_news", value:"true");
  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_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:"^(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);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP1", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"1", cpu:"x86_64", reference:"kernel-xen-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", cpu:"x86_64", reference:"kernel-xen-base-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", cpu:"x86_64", reference:"kernel-xen-base-debuginfo-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", cpu:"x86_64", reference:"kernel-xen-debuginfo-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", cpu:"x86_64", reference:"kernel-xen-debugsource-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", cpu:"x86_64", reference:"kernel-xen-devel-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", cpu:"x86_64", reference:"kgraft-patch-3_12_74-60_64_82-default-1-2.9.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", cpu:"x86_64", reference:"kgraft-patch-3_12_74-60_64_82-xen-1-2.9.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", cpu:"s390x", reference:"kernel-default-man-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"kernel-default-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"kernel-default-base-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"kernel-default-base-debuginfo-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"kernel-default-debuginfo-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"kernel-default-debugsource-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"kernel-default-devel-3.12.74-60.64.82.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"kernel-syms-3.12.74-60.64.82.1")) 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");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include("compat.inc");

if (description)
{
  script_id(111778);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/24");

  script_cve_id("CVE-2017-13215", "CVE-2018-10675", "CVE-2018-3620", "CVE-2018-3646", "CVE-2018-3693", "CVE-2018-5390", "CVE-2018-7566");

  script_name(english:"Scientific Linux Security Update : kernel on SL7.x x86_64 (20180814) (Foreshadow)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Security Fix(es) :

  - Modern operating systems implement virtualization of
    physical memory to efficiently use available system
    resources and provide inter-domain protection through
    access control and isolation. The L1TF issue was found
    in the way the x86 microprocessor designs have
    implemented speculative execution of instructions (a
    commonly used performance optimisation) in combination
    with handling of page-faults caused by terminated
    virtual to physical address resolving process. As a
    result, an unprivileged attacker could use this flaw to
    read privileged memory of the kernel or other processes
    and/or cross guest/host boundaries to read host memory
    by conducting targeted cache side-channel attacks.
    (CVE-2018-3620, CVE-2018-3646)

  - An industry-wide issue was found in the way many modern
    microprocessor designs have implemented speculative
    execution of instructions past bounds check. The flaw
    relies on the presence of a precisely-defined
    instruction sequence in the privileged code and the fact
    that memory writes occur to an address which depends on
    the untrusted value. Such writes cause an update into
    the microprocessor's data cache even for speculatively
    executed instructions that never actually commit
    (retire). As a result, an unprivileged attacker could
    use this flaw to influence speculative execution and/or
    read privileged memory by conducting targeted cache
    side- channel attacks. (CVE-2018-3693)

  - A flaw named SegmentSmack was found in the way the Linux
    kernel handled specially crafted TCP packets. A remote
    attacker could use this flaw to trigger time and
    calculation expensive calls to tcp_collapse_ofo_queue()
    and tcp_prune_ofo_queue() functions by sending specially
    modified packets within ongoing TCP sessions which could
    lead to a CPU saturation and hence a denial of service
    on the system. Maintaining the denial of service
    condition requires continuous two-way TCP sessions to a
    reachable open port, thus the attacks cannot be
    performed using spoofed IP addresses. (CVE-2018-5390)

  - kernel: crypto: privilege escalation in skcipher_recvmsg
    function (CVE-2017-13215)

  - kernel: mm: use-after-free in do_get_mempolicy function
    allows local DoS or other unspecified impact
    (CVE-2018-10675)

  - kernel: race condition in snd_seq_write() may lead to
    UAF or OOB access (CVE-2018-7566)"
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1808&L=scientific-linux-errata&F=&S=&P=847
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?e6645d58"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A: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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-abi-whitelists");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo-common-x86_64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-tools-libs-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:perf-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:python-perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:python-perf-debuginfo");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/16");
  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) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 7.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

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


flag = 0;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", reference:"kernel-abi-whitelists-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-debug-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-debug-debuginfo-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-debug-devel-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-debuginfo-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-devel-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", reference:"kernel-doc-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-headers-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-tools-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-tools-debuginfo-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-tools-libs-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-tools-libs-devel-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"perf-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"perf-debuginfo-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"python-perf-3.10.0-862.11.6.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"python-perf-debuginfo-3.10.0-862.11.6.el7")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel / kernel-abi-whitelists / kernel-debug / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2018-1023.
#

include("compat.inc");

if (description)
{
  script_id(110197);
  script_version("1.7");
  script_cvs_date("Date: 2019/07/10 16:04:12");

  script_cve_id("CVE-2017-13215", "CVE-2017-16939", "CVE-2018-1000199", "CVE-2018-10675", "CVE-2018-1068", "CVE-2018-1087", "CVE-2018-10901", "CVE-2018-1091", "CVE-2018-1108", "CVE-2018-7995", "CVE-2018-8897");
  script_xref(name:"ALAS", value:"2018-1023");

  script_name(english:"Amazon Linux AMI : kernel (ALAS-2018-1023)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux AMI host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A weakness was found in the Linux kernel's implementation of random
seed data. Programs, early in the boot sequence, could use the data
allocated for the seed before it was sufficiently generated.
(CVE-2018-1108)

A flaw was found in the way the Linux kernel handled exceptions
delivered after a stack switch operation via Mov SS or Pop SS
instructions. During the stack switch operation, the processor did not
deliver interrupts and exceptions, rather they are delivered once the
first instruction after the stack switch is executed. An unprivileged
system user could use this flaw to crash the system kernel resulting
in the denial of service. (CVE-2018-8897)

A flaw was found in the Linux kernel's implementation of 32-bit
syscall interface for bridging. This allowed a privileged user to
arbitrarily write to a limited range of kernel memory. (CVE-2018-1068)

The Linux kernel is vulerable to a use-after-free flaw when
Transformation User configuration interface(CONFIG_XFRM_USER)
compile-time configuration were enabled. This vulnerability occurs
while closing a xfrm netlink socket in xfrm_dump_policy_done. A
user/process could abuse this flaw to potentially escalate their
privileges on a system. (CVE-2017-16939)

A flaw was found in the Linux kernel where a crash can be triggered
from unprivileged userspace during core dump on a POWER system with a
certain configuration. This is due to a missing processor feature
check and an erroneous use of transactional memory (TM) instructions
in the core dump path leading to a denial of service.(CVE-2018-1091)

An address corruption flaw was discovered in the Linux kernel built
with hardware breakpoint (CONFIG_HAVE_HW_BREAKPOINT) support. While
modifying a h/w breakpoint via 'modify_user_hw_breakpoint' routine, an
unprivileged user/process could use this flaw to crash the system
kernel resulting in DoS OR to potentially escalate privileges on a the
system.(CVE-2018-1000199)

A flaw was found in the way the Linux kernel's KVM hypervisor handled
exceptions delivered after a stack switch operation via Mov SS or Pop
SS instructions. During the stack switch operation, the processor did
not deliver interrupts and exceptions, rather they are delivered once
the first instruction after the stack switch is executed. An
unprivileged KVM guest user could use this flaw to crash the guest or,
potentially, escalate their privileges in the guest.(CVE-2018-1087)

A flaw was found in the Linux kernel's skcipher component, which
affects the skcipher_recvmsg function. Attackers using a specific
input can lead to a privilege escalation.(CVE-2017-13215)

The do_get_mempolicy() function in mm/mempolicy.c in the Linux kernel
allows local users to hit a use-after-free bug via crafted system
calls and thus cause a denial of service (DoS) or possibly have
unspecified other impact. Due to the nature of the flaw, privilege
escalation cannot be fully ruled out.(CVE-2018-10675)

A flaw was found in Linux kernel's KVM virtualization subsystem. The
VMX code does not restore the GDT.LIMIT to the previous host value,
but instead sets it to 64KB. With a corrupted GDT limit a host's
userspace code has an ability to place malicious entries in the GDT,
particularly to the per-cpu variables. An attacker can use this to
escalate their privileges.(CVE-2018-10901)

A race condition in the store_int_with_restart() function in
arch/x86/kernel/cpu/mcheck/mce.c in the Linux kernel allows local
users to cause a denial of service (panic) by leveraging root access
to write to the check_interval file in a
/sys/devices/system/machinecheck/machinecheck<cpu number> directory.
(CVE-2018-7995)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2018-1023.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Run 'yum update kernel' then reboot the instance to update your
system."
  );
  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:H/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:H/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:"metasploit_name", value:'Microsoft Windows POP/MOV SS Local Privilege Elevation Vulnerability');
  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:amazon:linux:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel-debuginfo-common-i686");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:kernel-tools-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:perf-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/01/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/05/30");
  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:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/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/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}

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


flag = 0;
if (rpm_check(release:"ALA", reference:"kernel-4.14.42-52.37.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"kernel-debuginfo-4.14.42-52.37.amzn1")) flag++;
if (rpm_check(release:"ALA", cpu:"i686", reference:"kernel-debuginfo-common-i686-4.14.42-52.37.amzn1")) flag++;
if (rpm_check(release:"ALA", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-4.14.42-52.37.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"kernel-devel-4.14.42-52.37.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"kernel-headers-4.14.42-52.37.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"kernel-tools-4.14.42-52.37.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"kernel-tools-debuginfo-4.14.42-52.37.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"kernel-tools-devel-4.14.42-52.37.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"perf-4.14.42-52.37.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"perf-debuginfo-4.14.42-52.37.amzn1")) 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 / kernel-debuginfo / kernel-debuginfo-common-i686 / etc");
}