Ubuntu 16.04 ESM / 18.04 LTS : OpenJPEG vulnerabilities (USN-5952-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5952-1. 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(172576);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id(
    "CVE-2020-6851",
    "CVE-2020-8112",
    "CVE-2020-15389",
    "CVE-2020-27814",
    "CVE-2020-27823",
    "CVE-2020-27824",
    "CVE-2020-27841",
    "CVE-2020-27842",
    "CVE-2020-27843",
    "CVE-2020-27845"
  );
  script_xref(name:"CEA-ID", value:"CEA-2021-0025");
  script_xref(name:"USN", value:"5952-1");

  script_name(english:"Ubuntu 16.04 ESM / 18.04 LTS : OpenJPEG vulnerabilities (USN-5952-1)");

  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 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in
the USN-5952-1 advisory.

  - OpenJPEG through 2.3.1 has a heap-based buffer overflow in opj_t1_clbl_decode_processor in openjp2/t1.c
    because of lack of opj_j2k_update_image_dimensions validation. (CVE-2020-6851)

  - opj_t1_clbl_decode_processor in openjp2/t1.c in OpenJPEG 2.3.1 through 2020-01-28 has a heap-based buffer
    overflow in the qmfbid==1 case, a different issue than CVE-2020-6851. (CVE-2020-8112)

  - jp2/opj_decompress.c in OpenJPEG through 2.3.1 has a use-after-free that can be triggered if there is a
    mix of valid and invalid files in a directory operated on by the decompressor. Triggering a double-free
    may also be possible. This is related to calling opj_image_destroy twice. (CVE-2020-15389)

  - A heap-buffer overflow was found in the way openjpeg2 handled certain PNG format files. An attacker could
    use this flaw to cause an application crash or in some cases execute arbitrary code with the permission of
    the user running such an application. (CVE-2020-27814)

  - A flaw was found in OpenJPEG's encoder. This flaw allows an attacker to pass specially crafted x,y offset
    input to OpenJPEG to use during encoding. The highest threat from this vulnerability is to
    confidentiality, integrity, as well as system availability. (CVE-2020-27823)

  - A flaw was found in OpenJPEG's encoder in the opj_dwt_calc_explicit_stepsizes() function. This flaw allows
    an attacker who can supply crafted input to decomposition levels to cause a buffer overflow. The highest
    threat from this vulnerability is to system availability. (CVE-2020-27824)

  - There's a flaw in openjpeg in versions prior to 2.4.0 in src/lib/openjp2/pi.c. When an attacker is able to
    provide crafted input to be processed by the openjpeg encoder, this could cause an out-of-bounds read. The
    greatest impact from this flaw is to application availability. (CVE-2020-27841)

  - There's a flaw in openjpeg's t2 encoder in versions prior to 2.4.0. An attacker who is able to provide
    crafted input to be processed by openjpeg could cause a null pointer dereference. The highest impact of
    this flaw is to application availability. (CVE-2020-27842)

  - A flaw was found in OpenJPEG in versions prior to 2.4.0. This flaw allows an attacker to provide specially
    crafted input to the conversion or encoding functionality, causing an out-of-bounds read. The highest
    threat from this vulnerability is system availability. (CVE-2020-27843)

  - There's a flaw in src/lib/openjp2/pi.c of openjpeg in versions prior to 2.4.0. If an attacker is able to
    provide untrusted input to openjpeg's conversion/encoding functionality, they could cause an out-of-bounds
    read. The highest impact of this flaw is to application availability. (CVE-2020-27845)

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-5952-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-8112");

  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:"2020/01/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/03/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/03/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:esm");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenjp2-7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenjp2-7-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenjp2-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenjp3d-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenjp3d7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenjpip-dec-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenjpip-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenjpip-viewer");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenjpip7");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2023 Canonical, Inc. / NASL script (C) 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)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04', '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': 'libopenjp2-7', 'pkgver': '2.1.2-1.1+deb9u6ubuntu0.1~esm3'},
    {'osver': '16.04', 'pkgname': 'libopenjp2-7-dev', 'pkgver': '2.1.2-1.1+deb9u6ubuntu0.1~esm3'},
    {'osver': '16.04', 'pkgname': 'libopenjp2-tools', 'pkgver': '2.1.2-1.1+deb9u6ubuntu0.1~esm3'},
    {'osver': '16.04', 'pkgname': 'libopenjp3d-tools', 'pkgver': '2.1.2-1.1+deb9u6ubuntu0.1~esm3'},
    {'osver': '16.04', 'pkgname': 'libopenjp3d7', 'pkgver': '2.1.2-1.1+deb9u6ubuntu0.1~esm3'},
    {'osver': '16.04', 'pkgname': 'libopenjpip-dec-server', 'pkgver': '2.1.2-1.1+deb9u6ubuntu0.1~esm3'},
    {'osver': '16.04', 'pkgname': 'libopenjpip-server', 'pkgver': '2.1.2-1.1+deb9u6ubuntu0.1~esm3'},
    {'osver': '16.04', 'pkgname': 'libopenjpip-viewer', 'pkgver': '2.1.2-1.1+deb9u6ubuntu0.1~esm3'},
    {'osver': '16.04', 'pkgname': 'libopenjpip7', 'pkgver': '2.1.2-1.1+deb9u6ubuntu0.1~esm3'},
    {'osver': '18.04', 'pkgname': 'libopenjp2-7', 'pkgver': '2.3.0-2+deb10u2build0.18.04.1'},
    {'osver': '18.04', 'pkgname': 'libopenjp2-7-dev', 'pkgver': '2.3.0-2+deb10u2build0.18.04.1'},
    {'osver': '18.04', 'pkgname': 'libopenjp2-tools', 'pkgver': '2.3.0-2+deb10u2build0.18.04.1'},
    {'osver': '18.04', 'pkgname': 'libopenjp3d-tools', 'pkgver': '2.3.0-2+deb10u2build0.18.04.1'},
    {'osver': '18.04', 'pkgname': 'libopenjp3d7', 'pkgver': '2.3.0-2+deb10u2build0.18.04.1'},
    {'osver': '18.04', 'pkgname': 'libopenjpip-dec-server', 'pkgver': '2.3.0-2+deb10u2build0.18.04.1'},
    {'osver': '18.04', 'pkgname': 'libopenjpip-server', 'pkgver': '2.3.0-2+deb10u2build0.18.04.1'},
    {'osver': '18.04', 'pkgname': 'libopenjpip-viewer', 'pkgver': '2.3.0-2+deb10u2build0.18.04.1'},
    {'osver': '18.04', 'pkgname': 'libopenjpip7', 'pkgver': '2.3.0-2+deb10u2build0.18.04.1'}
];

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, 'libopenjp2-7 / libopenjp2-7-dev / libopenjp2-tools / etc');
}