Debian DLA-3138-1 : bind9 - LTS security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-3138. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(165715);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/01/26");

  script_cve_id("CVE-2022-2795", "CVE-2022-38177", "CVE-2022-38178");
  script_xref(name:"IAVA", value:"2022-A-0387-S");

  script_name(english:"Debian DLA-3138-1 : bind9 - LTS security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-3138 advisory.

  - By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the
    resolver's performance, effectively denying legitimate clients access to the DNS resolution service.
    (CVE-2022-2795)

  - By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can
    trigger a small memory leak. It is possible to gradually erode available memory to the point where named
    crashes for lack of resources. (CVE-2022-38177)

  - By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can
    trigger a small memory leak. It is possible to gradually erode available memory to the point where named
    crashes for lack of resources. (CVE-2022-38178)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/bind9");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/lts/security/2022/dla-3138");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-2795");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-38177");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-38178");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/bind9");
  script_set_attribute(attribute:"solution", value:
"Upgrade the bind9 packages.

For Debian 10 buster, these problems have been fixed in version 1");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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-2022-38178");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/09/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/10/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/10/05");

  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: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:libbind9-161");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdns-export1104");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdns1104");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libirs-export161");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libirs161");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisc-export1100");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisc1100");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccc-export161");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccc161");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccfg-export163");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libisccfg163");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:liblwres161");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include('debian_package.inc');

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

var release = get_kb_item('Host/Debian/release');
if ( isnull(release) ) audit(AUDIT_OS_NOT, 'Debian');
var release = chomp(release);
if (! preg(pattern:"^(10)\.[0-9]+", string:release)) audit(AUDIT_OS_NOT, 'Debian 10.0', 'Debian ' + release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);

var pkgs = [
    {'release': '10.0', 'prefix': 'bind9', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'bind9-doc', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'bind9-host', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'bind9utils', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'dnsutils', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libbind-dev', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libbind-export-dev', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libbind9-161', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libdns-export1104', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libdns1104', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libirs-export161', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libirs161', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libisc-export1100', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libisc1100', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libisccc-export161', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libisccc161', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libisccfg-export163', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'libisccfg163', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'},
    {'release': '10.0', 'prefix': 'liblwres161', 'reference': '1:9.11.5.P4+dfsg-5.1+deb10u8'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var release = NULL;
  var prefix = NULL;
  var reference = NULL;
  if (!empty_or_null(package_array['release'])) release = package_array['release'];
  if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (release && prefix && reference) {
    if (deb_check(release:release, prefix:prefix, reference:reference)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bind9 / bind9-doc / bind9-host / bind9utils / dnsutils / libbind-dev / etc');
}