Ubuntu 18.04 LTS / 20.04 LTS : OpenJDK vulnerabilities (USN-4433-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4433-1. 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(138998);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id(
    "CVE-2020-14556",
    "CVE-2020-14562",
    "CVE-2020-14573",
    "CVE-2020-14577",
    "CVE-2020-14581",
    "CVE-2020-14583",
    "CVE-2020-14593",
    "CVE-2020-14621"
  );
  script_xref(name:"USN", value:"4433-1");

  script_name(english:"Ubuntu 18.04 LTS / 20.04 LTS : OpenJDK vulnerabilities (USN-4433-1)");

  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-4433-1 advisory.

    Johannes Kuhn discovered that OpenJDK incorrectly handled access control contexts. An attacker could
    possibly use this issue to execute arbitrary code. (CVE-2020-14556)

    It was discovered that OpenJDK incorrectly handled memory allocation when reading TIFF image files. An
    attacker could possibly use this issue to cause a denial of service. (CVE-2020-14562)

    It was discovered that OpenJDK incorrectly handled input data. An attacker could possibly use this issue
    to insert, edit or obtain sensitive information. (CVE-2020-14573)

    Philippe Arteau discovered that OpenJDK incorrectly verified names in TLS server's X.509 certificates. An
    attacker could possibly use this issue to obtain sensitive information. (CVE-2020-14577)

    It was discovered that OpenJDK incorrectly handled image files. An attacker could possibly use this issue
    to obtain sensitive information. (CVE-2020-14581)

    Markus Loewe discovered that OpenJDK incorrectly handled concurrent access in java.nio.Buffer class. An
    attacker could use this issue to bypass the sandbox restrictions and cause unspecified impact.
    (CVE-2020-14583)

    It was discovered that OpenJDK incorrectly handled transformation of images. An attacker could possibly
    use this issue to bypass sandbox restrictions and insert, edit or obtain sensitive information.
    (CVE-2020-14593)

    Roman Shemyakin discovered that OpenJDK incorrectly handled XML files. An attacker could possibly use this
    issue to insert, edit or obtain sensitive information. (CVE-2020-14621)

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-4433-1");
  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:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/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-2020-14556");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-14583");

  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:"2020/07/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/07/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-11-jdk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-11-jdk-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-11-jre");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-11-jre-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-11-jre-zero");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openjdk-11-source");
  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:openjdk-11-demo");
  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) 2020-2024 Canonical, Inc. / NASL script (C) 2020-2024 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': 'openjdk-11-demo', 'pkgver': '11.0.8+10-0ubuntu1~18.04.1'},
    {'osver': '18.04', 'pkgname': 'openjdk-11-jdk', 'pkgver': '11.0.8+10-0ubuntu1~18.04.1'},
    {'osver': '18.04', 'pkgname': 'openjdk-11-jdk-headless', 'pkgver': '11.0.8+10-0ubuntu1~18.04.1'},
    {'osver': '18.04', 'pkgname': 'openjdk-11-jre', 'pkgver': '11.0.8+10-0ubuntu1~18.04.1'},
    {'osver': '18.04', 'pkgname': 'openjdk-11-jre-headless', 'pkgver': '11.0.8+10-0ubuntu1~18.04.1'},
    {'osver': '18.04', 'pkgname': 'openjdk-11-jre-zero', 'pkgver': '11.0.8+10-0ubuntu1~18.04.1'},
    {'osver': '18.04', 'pkgname': 'openjdk-11-source', 'pkgver': '11.0.8+10-0ubuntu1~18.04.1'},
    {'osver': '20.04', 'pkgname': 'openjdk-11-demo', 'pkgver': '11.0.8+10-0ubuntu1~20.04'},
    {'osver': '20.04', 'pkgname': 'openjdk-11-jdk', 'pkgver': '11.0.8+10-0ubuntu1~20.04'},
    {'osver': '20.04', 'pkgname': 'openjdk-11-jdk-headless', 'pkgver': '11.0.8+10-0ubuntu1~20.04'},
    {'osver': '20.04', 'pkgname': 'openjdk-11-jre', 'pkgver': '11.0.8+10-0ubuntu1~20.04'},
    {'osver': '20.04', 'pkgname': 'openjdk-11-jre-headless', 'pkgver': '11.0.8+10-0ubuntu1~20.04'},
    {'osver': '20.04', 'pkgname': 'openjdk-11-jre-zero', 'pkgver': '11.0.8+10-0ubuntu1~20.04'},
    {'osver': '20.04', 'pkgname': 'openjdk-11-source', 'pkgver': '11.0.8+10-0ubuntu1~20.04'}
];

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, 'openjdk-11-demo / openjdk-11-jdk / openjdk-11-jdk-headless / etc');
}