Ubuntu 18.04 LTS / 20.04 LTS : libjpeg-turbo vulnerabilities (USN-5631-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5631-1. 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(165321);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/28");

  script_cve_id(
    "CVE-2018-11813",
    "CVE-2020-17541",
    "CVE-2020-35538",
    "CVE-2021-46822"
  );
  script_xref(name:"USN", value:"5631-1");

  script_name(english:"Ubuntu 18.04 LTS / 20.04 LTS : libjpeg-turbo vulnerabilities (USN-5631-1)");

  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 host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-5631-1 advisory.

    It was discovered that libjpeg-turbo incorrectly handled certain EOF characters. An attacker could
    possibly use this issue to cause libjpeg-turbo to consume resource, leading to a denial of service. This
    issue only affected Ubuntu 18.04 LTS. (CVE-2018-11813)

    It was discovered that libjpeg-turbo incorrectly handled certain malformed jpeg files. An attacker could
    possibly use this issue to cause libjpeg-turbo to crash, resulting in a denial of service.
    (CVE-2020-17541, CVE-2020-35538)

    It was discovered that libjpeg-turbo incorrectly handled certain malformed PPM files. An attacker could
    use this issue to cause libjpeg-turbo to crash, resulting in a denial of service, or possibly execute
    arbitrary code. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-46822)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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-5631-1");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-17541");

  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:"2018/06/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/09/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/09/22");

  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:"p-cpe:/a:canonical:ubuntu_linux:libjpeg-turbo-progs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libjpeg-turbo-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libjpeg-turbo8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libjpeg-turbo8-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libturbojpeg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libturbojpeg0-dev");
  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) 2022-2024 Canonical, Inc. / NASL script (C) 2022-2024 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)) audit(AUDIT_OS_NOT, 'Ubuntu 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': '18.04', 'pkgname': 'libjpeg-turbo-progs', 'pkgver': '1.5.2-0ubuntu5.18.04.6'},
    {'osver': '18.04', 'pkgname': 'libjpeg-turbo-test', 'pkgver': '1.5.2-0ubuntu5.18.04.6'},
    {'osver': '18.04', 'pkgname': 'libjpeg-turbo8', 'pkgver': '1.5.2-0ubuntu5.18.04.6'},
    {'osver': '18.04', 'pkgname': 'libjpeg-turbo8-dev', 'pkgver': '1.5.2-0ubuntu5.18.04.6'},
    {'osver': '18.04', 'pkgname': 'libturbojpeg', 'pkgver': '1.5.2-0ubuntu5.18.04.6'},
    {'osver': '18.04', 'pkgname': 'libturbojpeg0-dev', 'pkgver': '1.5.2-0ubuntu5.18.04.6'},
    {'osver': '20.04', 'pkgname': 'libjpeg-turbo-progs', 'pkgver': '2.0.3-0ubuntu1.20.04.3'},
    {'osver': '20.04', 'pkgname': 'libjpeg-turbo-test', 'pkgver': '2.0.3-0ubuntu1.20.04.3'},
    {'osver': '20.04', 'pkgname': 'libjpeg-turbo8', 'pkgver': '2.0.3-0ubuntu1.20.04.3'},
    {'osver': '20.04', 'pkgname': 'libjpeg-turbo8-dev', 'pkgver': '2.0.3-0ubuntu1.20.04.3'},
    {'osver': '20.04', 'pkgname': 'libturbojpeg', 'pkgver': '2.0.3-0ubuntu1.20.04.3'},
    {'osver': '20.04', 'pkgname': 'libturbojpeg0-dev', 'pkgver': '2.0.3-0ubuntu1.20.04.3'}
];

var flag = 0;
foreach var 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)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libjpeg-turbo-progs / libjpeg-turbo-test / libjpeg-turbo8 / etc');
}