Scientific Linux Security Update : ntp on SL6.x i386/x86_64 (20160510)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

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

if (description)
{
  script_id(91539);
  script_version("2.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2014-9750", "CVE-2015-5194", "CVE-2015-5195", "CVE-2015-5219", "CVE-2015-7691", "CVE-2015-7692", "CVE-2015-7701", "CVE-2015-7702", "CVE-2015-7703", "CVE-2015-7852", "CVE-2015-7977", "CVE-2015-7978");
  script_xref(name:"TRA", value:"TRA-2015-04");

  script_name(english:"Scientific Linux Security Update : ntp on SL6.x i386/x86_64 (20160510)");
  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) :

  - It was found that the fix for CVE-2014-9750 was
    incomplete: three issues were found in the value length
    checks in NTP's ntp_crypto.c, where a packet with
    particular autokey operations that contained malicious
    data was not always being completely validated. A remote
    attacker could use a specially crafted NTP packet to
    crash ntpd. (CVE-2015-7691, CVE-2015-7692,
    CVE-2015-7702)

  - A memory leak flaw was found in ntpd's CRYPTO_ASSOC. If
    ntpd was configured to use autokey authentication, an
    attacker could send packets to ntpd that would, after
    several days of ongoing attack, cause it to run out of
    memory. (CVE-2015-7701)

  - An off-by-one flaw, leading to a buffer overflow, was
    found in cookedprint functionality of ntpq. A specially
    crafted NTP packet could potentially cause ntpq to
    crash. (CVE-2015-7852)

  - A NULL pointer dereference flaw was found in the way
    ntpd processed 'ntpdc reslist' commands that queried
    restriction lists with a large amount of entries. A
    remote attacker could potentially use this flaw to crash
    ntpd. (CVE-2015-7977)

  - A stack-based buffer overflow flaw was found in the way
    ntpd processed 'ntpdc reslist' commands that queried
    restriction lists with a large amount of entries. A
    remote attacker could use this flaw to crash ntpd.
    (CVE-2015-7978)

  - It was found that ntpd could crash due to an
    uninitialized variable when processing malformed
    logconfig configuration commands. (CVE-2015-5194)

  - It was found that ntpd would exit with a segmentation
    fault when a statistics type that was not enabled during
    compilation (e.g. timingstats) was referenced by the
    statistics or filegen configuration command.
    (CVE-2015-5195)

  - It was discovered that the sntp utility could become
    unresponsive due to being caught in an infinite loop
    when processing a crafted NTP packet. (CVE-2015-5219)

  - It was found that NTP's :config command could be used to
    set the pidfile and driftfile paths without any
    restrictions. A remote attacker could use this flaw to
    overwrite a file on the file system with a file
    containing the pid of the ntpd process (immediately) or
    the current estimated drift of the system clock (in
    hourly intervals). (CVE-2015-7703)

The CVE-2015-5219 and CVE-2015-7703 issues were discovered by Miroslav
Lichvr (Red Hat)."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1606&L=scientific-linux-errata&F=&S=&P=1297
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ef45218d"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.tenable.com/security/research/tra-2015-04"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:ntp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:ntp-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:ntp-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:ntp-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:ntpdate");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/10/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/05/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/06/09");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2021 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:"ntp-4.2.6p5-10.el6")) flag++;
if (rpm_check(release:"SL6", reference:"ntp-debuginfo-4.2.6p5-10.el6")) flag++;
if (rpm_check(release:"SL6", reference:"ntp-doc-4.2.6p5-10.el6")) flag++;
if (rpm_check(release:"SL6", reference:"ntp-perl-4.2.6p5-10.el6")) flag++;
if (rpm_check(release:"SL6", reference:"ntpdate-4.2.6p5-10.el6")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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, "ntp / ntp-debuginfo / ntp-doc / ntp-perl / ntpdate");
}