Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20180619) (Spectre)

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

include("compat.inc");

if (description)
{
  script_id(110887);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/24");

  script_cve_id("CVE-2012-6701", "CVE-2015-8830", "CVE-2016-8650", "CVE-2017-12190", "CVE-2017-15121", "CVE-2017-18203", "CVE-2017-2671", "CVE-2017-6001", "CVE-2017-7308", "CVE-2017-7616", "CVE-2017-7889", "CVE-2017-8890", "CVE-2017-9075", "CVE-2017-9076", "CVE-2017-9077", "CVE-2018-1130", "CVE-2018-3639", "CVE-2018-5803");

  script_name(english:"Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20180619) (Spectre)");
  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) :

  - An industry-wide issue was found in the way many modern
    microprocessor designs have implemented speculative
    execution of Load & Store instructions (a commonly
    used performance optimization). It relies on the
    presence of a precisely-defined instruction sequence in
    the privileged code as well as the fact that memory read
    from address to which a recent memory write has occurred
    may see an older value and subsequently 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 read privileged memory by
    conducting targeted cache side-channel attacks.
    (CVE-2018-3639, PowerPC)

  - kernel: net/packet: overflow in check for priv area size
    (CVE-2017-7308)

  - kernel: AIO interface didn't use rw_verify_area() for
    checking mandatory locking on files and size of access
    (CVE-2012-6701)

  - kernel: AIO write triggers integer overflow in some
    protocols (CVE-2015-8830)

  - kernel: NULL pointer dereference via keyctl
    (CVE-2016-8650)

  - kernel: ping socket / AF_LLC connect() sin_family race
    (CVE-2017-2671)

  - kernel: Race condition between multiple
    sys_perf_event_open() calls (CVE-2017-6001)

  - kernel: Incorrect error handling in the set_mempolicy
    and mbind compat syscalls in mm/mempolicy.c
    (CVE-2017-7616)

  - kernel: mm subsystem does not properly enforce the
    CONFIG_STRICT_DEVMEM protection mechanism
    (CVE-2017-7889)

  - kernel: Double free in the inet_csk_clone_lock function
    in net/ipv4/inet_connection_sock.c (CVE-2017-8890)

  - kernel: net: sctp_v6_create_accept_sk function
    mishandles inheritance (CVE-2017-9075)

  - kernel: net: IPv6 DCCP implementation mishandles
    inheritance (CVE-2017-9076)

  - kernel: net: tcp_v6_syn_recv_sock function mishandles
    inheritance (CVE-2017-9077)

  - kernel: memory leak when merging buffers in SCSI IO
    vectors (CVE-2017-12190)

  - kernel: vfs: BUG in truncate_inode_pages_range() and
    fuse client (CVE-2017-15121)

  - kernel: Race condition in
    drivers/md/dm.c:dm_get_from_kobject() allows local users
    to cause a denial of service (CVE-2017-18203)

  - kernel: a NULL pointer dereference in
    net/dccp/output.c:dccp_write_xmit() leads to a system
    crash (CVE-2018-1130)

  - kernel: Missing length check of payload in
    net/sctp/sm_make_chunk.c:_sctp_make_chunk() function
    allows denial of service (CVE-2018-5803)"
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1807&L=scientific-linux-errata&F=&S=&P=1444
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4e78e31e"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/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:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'AF_PACKET packet_set_ring Privilege Escalation');
  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: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-i686");
  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-firmware");
  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: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:"2016/05/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/06/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/03");
  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:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 6.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:"SL6", reference:"kernel-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-abi-whitelists-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-debuginfo-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-devel-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debuginfo-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debuginfo-common-i686-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-devel-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-doc-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-firmware-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-headers-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"perf-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"perf-debuginfo-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"python-perf-2.6.32-754.el6")) flag++;
if (rpm_check(release:"SL6", reference:"python-perf-debuginfo-2.6.32-754.el6")) 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");
}