Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : Bind vulnerabilities (USN-5626-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5626-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(165290);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/12");

  script_cve_id(
    "CVE-2022-2795",
    "CVE-2022-2881",
    "CVE-2022-2906",
    "CVE-2022-3080",
    "CVE-2022-38177",
    "CVE-2022-38178"
  );
  script_xref(name:"USN", value:"5626-1");

  script_name(english:"Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : Bind vulnerabilities (USN-5626-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-5626-1 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)

  - The underlying bug might cause read past end of the buffer and either read memory it should not read, or
    crash the process. (CVE-2022-2881)

  - An attacker can leverage this flaw to gradually erode available memory to the point where named crashes
    for lack of resources. Upon restart the attacker would have to begin again, but nevertheless there is the
    potential to deny service. (CVE-2022-2906)

  - By sending specific queries to the resolver, an attacker can cause named to crash. (CVE-2022-3080)

  - 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://ubuntu.com/security/notices/USN-5626-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/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:L/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-2022-2881");

  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:"2022/09/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/09/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bind9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bind9-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bind9-dnsutils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bind9-host");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bind9-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bind9-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:bind9utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:dnsutils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libbind-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libbind-export-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libbind9-160");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdns-export1100");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdns1100");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libirs-export160");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libirs160");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisc-export169");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisc169");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccc-export160");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccc160");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccfg-export160");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libisccfg160");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:liblwres160");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2022-2023 Canonical, Inc. / NASL script (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/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);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 18.04 / 20.04 / 22.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '18.04', 'pkgname': 'bind9', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'bind9-host', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'bind9utils', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'dnsutils', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libbind-dev', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libbind-export-dev', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libbind9-160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libdns-export1100', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libdns1100', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libirs-export160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libirs160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libisc-export169', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libisc169', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libisccc-export160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libisccc160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libisccfg-export160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'libisccfg160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '18.04', 'pkgname': 'liblwres160', 'pkgver': '1:9.11.3+dfsg-1ubuntu1.18'},
    {'osver': '20.04', 'pkgname': 'bind9', 'pkgver': '1:9.16.1-0ubuntu2.11'},
    {'osver': '20.04', 'pkgname': 'bind9-dnsutils', 'pkgver': '1:9.16.1-0ubuntu2.11'},
    {'osver': '20.04', 'pkgname': 'bind9-host', 'pkgver': '1:9.16.1-0ubuntu2.11'},
    {'osver': '20.04', 'pkgname': 'bind9-libs', 'pkgver': '1:9.16.1-0ubuntu2.11'},
    {'osver': '20.04', 'pkgname': 'bind9-utils', 'pkgver': '1:9.16.1-0ubuntu2.11'},
    {'osver': '20.04', 'pkgname': 'bind9utils', 'pkgver': '1:9.16.1-0ubuntu2.11'},
    {'osver': '20.04', 'pkgname': 'dnsutils', 'pkgver': '1:9.16.1-0ubuntu2.11'},
    {'osver': '22.04', 'pkgname': 'bind9', 'pkgver': '1:9.18.1-1ubuntu1.2'},
    {'osver': '22.04', 'pkgname': 'bind9-dev', 'pkgver': '1:9.18.1-1ubuntu1.2'},
    {'osver': '22.04', 'pkgname': 'bind9-dnsutils', 'pkgver': '1:9.18.1-1ubuntu1.2'},
    {'osver': '22.04', 'pkgname': 'bind9-host', 'pkgver': '1:9.18.1-1ubuntu1.2'},
    {'osver': '22.04', 'pkgname': 'bind9-libs', 'pkgver': '1:9.18.1-1ubuntu1.2'},
    {'osver': '22.04', 'pkgname': 'bind9-utils', 'pkgver': '1:9.18.1-1ubuntu1.2'},
    {'osver': '22.04', 'pkgname': 'bind9utils', 'pkgver': '1:9.18.1-1ubuntu1.2'},
    {'osver': '22.04', 'pkgname': 'dnsutils', 'pkgver': '1:9.18.1-1ubuntu1.2'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bind9 / bind9-dev / bind9-dnsutils / bind9-host / bind9-libs / etc');
}