CentOS 7 : bind (CESA-2016:2615)

#%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-2016:2615 and 
# CentOS Errata and Security Advisory 2016:2615 respectively.
#

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

if (description)
{
  script_id(95354);
  script_version("3.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2016-8864");
  script_xref(name:"RHSA", value:"2016:2615");

  script_name(english:"CentOS 7 : bind (CESA-2016:2615)");
  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 7.

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 responses
containing a DNAME answer. A remote attacker could use this flaw to
make named exit unexpectedly with an assertion failure via a specially
crafted DNS response. (CVE-2016-8864)

Red Hat would like to thank ISC for reporting this issue. Upstream
acknowledges Tony Finch (University of Cambridge) and Marco Davids
(SIDN Labs) as the original reporters."
  );
  # https://lists.centos.org/pipermail/centos-cr-announce/2016-November/003676.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?d4dadfa5"
  );
  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-2016-8864");
  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-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-libs-lite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-license");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-lite-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-pkcs11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-pkcs11-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-pkcs11-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-pkcs11-utils");
  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-sdb-chroot");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bind-utils");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/11/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/11/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/11/28");
  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:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 7.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-7", cpu:"x86_64", reference:"bind-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-chroot-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-devel-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-libs-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-libs-lite-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-license-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-lite-devel-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-pkcs11-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-pkcs11-devel-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-pkcs11-libs-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-pkcs11-utils-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-sdb-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-sdb-chroot-9.9.4-38.el7_3")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bind-utils-9.9.4-38.el7_3")) flag++;


if (flag)
{
  cr_plugin_caveat = '\n' +
    'NOTE: The security advisory associated with this vulnerability has a\n' +
    'fixed package version that may only be available in the continuous\n' +
    'release (CR) repository for CentOS, until it is present in the next\n' +
    'point release of CentOS.\n\n' +

    'If an equal or higher package level does not exist in the baseline\n' +
    'repository for your major version of CentOS, then updates from the CR\n' +
    'repository will need to be applied in order to address the\n' +
    'vulnerability.\n';
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get() + cr_plugin_caveat
  );
  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-libs / bind-libs-lite / etc");
}