CentOS 5 / 6 : bind (CESA-2016:2093)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2016:2093 and 
# CentOS Errata and Security Advisory 2016:2093 respectively.
#

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

if (description)
{
  script_id(94202);
  script_version("2.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2016-2848");
  script_xref(name:"RHSA", value:"2016:2093");

  script_name(english:"CentOS 5 / 6 : bind (CESA-2016:2093)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An update for bind is now available for Red Hat Enterprise Linux 5 and
Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

The Berkeley Internet Name Domain (BIND) is an implementation of the
Domain Name System (DNS) protocols. BIND includes a DNS server
(named); a resolver library (routines for applications to use when
interfacing with DNS); and tools for verifying that the DNS server is
operating correctly.

Security Fix(es) :

* A denial of service flaw was found in the way BIND handled packets
with malformed options. A remote attacker could use this flaw to make
named exit unexpectedly with an assertion failure via a specially
crafted DNS packet. (CVE-2016-2848)"
  );
  # https://lists.centos.org/pipermail/centos-announce/2016-October/022127.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ef210213"
  );
  # https://lists.centos.org/pipermail/centos-announce/2016-October/022130.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?8d4d8904"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected bind packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  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_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-2848");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-chroot");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-libbind-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-sdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:caching-nameserver");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/10/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/10/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/10/24");
  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:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^(5|6)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 5.x / 6.x", "CentOS " + os_ver);

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


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


flag = 0;
if (rpm_check(release:"CentOS-5", reference:"bind-9.3.6-25.P1.el5_11.10")) flag++;
if (rpm_check(release:"CentOS-5", reference:"bind-chroot-9.3.6-25.P1.el5_11.10")) flag++;
if (rpm_check(release:"CentOS-5", reference:"bind-devel-9.3.6-25.P1.el5_11.10")) flag++;
if (rpm_check(release:"CentOS-5", reference:"bind-libbind-devel-9.3.6-25.P1.el5_11.10")) flag++;
if (rpm_check(release:"CentOS-5", reference:"bind-libs-9.3.6-25.P1.el5_11.10")) flag++;
if (rpm_check(release:"CentOS-5", reference:"bind-sdb-9.3.6-25.P1.el5_11.10")) flag++;
if (rpm_check(release:"CentOS-5", reference:"bind-utils-9.3.6-25.P1.el5_11.10")) flag++;
if (rpm_check(release:"CentOS-5", reference:"caching-nameserver-9.3.6-25.P1.el5_11.10")) flag++;

if (rpm_check(release:"CentOS-6", reference:"bind-9.8.2-0.47.rc1.el6_8.2")) flag++;
if (rpm_check(release:"CentOS-6", reference:"bind-chroot-9.8.2-0.47.rc1.el6_8.2")) flag++;
if (rpm_check(release:"CentOS-6", reference:"bind-devel-9.8.2-0.47.rc1.el6_8.2")) flag++;
if (rpm_check(release:"CentOS-6", reference:"bind-libs-9.8.2-0.47.rc1.el6_8.2")) flag++;
if (rpm_check(release:"CentOS-6", reference:"bind-sdb-9.8.2-0.47.rc1.el6_8.2")) flag++;
if (rpm_check(release:"CentOS-6", reference:"bind-utils-9.8.2-0.47.rc1.el6_8.2")) 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, "bind / bind-chroot / bind-devel / bind-libbind-devel / bind-libs / etc");
}