Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : SQLite vulnerabilities (USN-4394-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4394-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include('compat.inc');

if (description)
{
  script_id(137353);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id(
    "CVE-2018-8740",
    "CVE-2019-19603",
    "CVE-2019-19645",
    "CVE-2020-11655",
    "CVE-2020-13434",
    "CVE-2020-13435",
    "CVE-2020-13630",
    "CVE-2020-13631",
    "CVE-2020-13632"
  );
  script_xref(name:"USN", value:"4394-1");
  script_xref(name:"IAVA", value:"2020-A-0358-S");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : SQLite vulnerabilities (USN-4394-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"It was discovered that SQLite incorrectly handled certain corruped
schemas. An attacker could possibly use this issue to cause a denial
of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-8740)

It was discovered that SQLite incorrectly handled certain SELECT
statements. An attacker could possibly use this issue to cause a
denial of service. This issue was only addressed in Ubuntu 19.10.
(CVE-2019-19603)

It was discovered that SQLite incorrectly handled certain
self-referential views. An attacker could possibly use this issue to
cause a denial of service. This issue was only addressed in Ubuntu
19.10. (CVE-2019-19645)

Henry Liu discovered that SQLite incorrectly handled certain malformed
window-function queries. An attacker could possibly use this issue to
cause a denial of service. This issue only affected Ubuntu 19.10 and
Ubuntu 20.04 LTS. (CVE-2020-11655)

It was discovered that SQLite incorrectly handled certain string
operations. An attacker could use this issue to cause SQLite to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2020-13434)

It was discovered that SQLite incorrectly handled certain expressions.
An attacker could use this issue to cause SQLite to crash, resulting
in a denial of service, or possibly execute arbitrary code. This issue
only affected Ubuntu 19.10 and Ubuntu 20.04 LTS. (CVE-2020-13435)

It was discovered that SQLite incorrectly handled certain fts3
queries. An attacker could use this issue to cause SQLite to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2020-13630)

It was discovered that SQLite incorrectly handled certain virtual
table names. An attacker could possibly use this issue to cause a
denial of service. This issue was only addressed in Ubuntu 19.10 and
Ubuntu 20.04 LTS. (CVE-2020-13631)

It was discovered that SQLite incorrectly handled certain fts3
queries. An attacker could use this issue to cause SQLite to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2020-13632).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu 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://ubuntu.com/security/notices/USN-4394-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-13630");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/06/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsqlite3-0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsqlite3-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsqlite3-tcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:sqlite3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  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:"p-cpe:/a:canonical:ubuntu_linux:lemon");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2020-2023 Canonical, Inc. / NASL script (C) 2020-2023 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 (! ('16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04 / 20.04', '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': '16.04', 'pkgname': 'lemon', 'pkgver': '3.11.0-1ubuntu1.5'},
    {'osver': '16.04', 'pkgname': 'libsqlite3-0', 'pkgver': '3.11.0-1ubuntu1.5'},
    {'osver': '16.04', 'pkgname': 'libsqlite3-dev', 'pkgver': '3.11.0-1ubuntu1.5'},
    {'osver': '16.04', 'pkgname': 'libsqlite3-tcl', 'pkgver': '3.11.0-1ubuntu1.5'},
    {'osver': '16.04', 'pkgname': 'sqlite3', 'pkgver': '3.11.0-1ubuntu1.5'},
    {'osver': '18.04', 'pkgname': 'lemon', 'pkgver': '3.22.0-1ubuntu0.4'},
    {'osver': '18.04', 'pkgname': 'libsqlite3-0', 'pkgver': '3.22.0-1ubuntu0.4'},
    {'osver': '18.04', 'pkgname': 'libsqlite3-dev', 'pkgver': '3.22.0-1ubuntu0.4'},
    {'osver': '18.04', 'pkgname': 'libsqlite3-tcl', 'pkgver': '3.22.0-1ubuntu0.4'},
    {'osver': '18.04', 'pkgname': 'sqlite3', 'pkgver': '3.22.0-1ubuntu0.4'},
    {'osver': '20.04', 'pkgname': 'lemon', 'pkgver': '3.31.1-4ubuntu0.1'},
    {'osver': '20.04', 'pkgname': 'libsqlite3-0', 'pkgver': '3.31.1-4ubuntu0.1'},
    {'osver': '20.04', 'pkgname': 'libsqlite3-dev', 'pkgver': '3.31.1-4ubuntu0.1'},
    {'osver': '20.04', 'pkgname': 'libsqlite3-tcl', 'pkgver': '3.31.1-4ubuntu0.1'},
    {'osver': '20.04', 'pkgname': 'sqlite3', 'pkgver': '3.31.1-4ubuntu0.1'}
];

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_WARNING,
    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, 'lemon / libsqlite3-0 / libsqlite3-dev / libsqlite3-tcl / sqlite3');
}