Debian DLA-1859-1 : bind9 security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1859-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(126836);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2018-5743");

  script_name(english:"Debian DLA-1859-1 : bind9 security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A vulnerability was found in the Bind DNS Server. Limits on
simultaneous tcp connections have not been enforced correctly and
could lead to exhaustion of file descriptors. In the worst case this
could affect the file descriptors of the whole system.

For Debian 8 'Jessie', this problem has been fixed in version
1:9.9.5.dfsg-9+deb8u18.

We recommend that you upgrade your bind9 packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA 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://lists.debian.org/debian-lts-announce/2019/07/msg00019.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/bind9"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9-host");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bind9utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dnsutils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:host");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbind-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbind-export-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbind9-90");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdns-export100");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdns-export100-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdns100");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libirs-export91");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libirs-export91-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisc-export95");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisc-export95-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisc95");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccc90");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccfg-export90");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccfg-export90-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccfg90");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblwres90");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:lwresd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/22");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"8.0", prefix:"bind9", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"bind9-doc", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"bind9-host", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"bind9utils", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"dnsutils", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"host", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libbind-dev", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libbind-export-dev", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libbind9-90", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libdns-export100", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libdns-export100-udeb", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libdns100", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libirs-export91", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libirs-export91-udeb", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libisc-export95", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libisc-export95-udeb", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libisc95", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libisccc90", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libisccfg-export90", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libisccfg-export90-udeb", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"libisccfg90", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"liblwres90", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;
if (deb_check(release:"8.0", prefix:"lwresd", reference:"1:9.9.5.dfsg-9+deb8u18")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");