Linux Distros Unpatched Vulnerability : CVE-2020-16845

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(223345);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/08/18");

  script_cve_id("CVE-2020-16845");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2020-16845");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - Go before 1.13.15 and 14.x before 1.14.7 can have an infinite read loop in ReadUvarint and ReadVarint in
    encoding/binary via invalid inputs. (CVE-2020-16845)

Note that Nessus relies on the presence of the package as reported by the vendor.");
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  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2020-16845");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:N/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-2020-16845");

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  script_set_attribute(attribute:"exploit_available", value:"false");
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  script_set_attribute(attribute:"vuln_publication_date", value:"2020/08/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/03/04");

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  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("set_linux_os_id.nasl", "ssh_get_info2.nasl");
  script_require_keys("Host/OS/identifier", "Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched");
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}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/Debian/dpkg-l")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Ubuntu Linux-14.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14.04",
        "pkgs": [
          {"reference": "golang-1.10"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "golang-1.10"},
          {"reference": "golang-1.6"},
          {"reference": "golang-1.6-doc"},
          {"reference": "golang-1.6-go"},
          {"reference": "golang-1.6-src"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "golang-1.10"},
          {"reference": "golang-1.10-doc"},
          {"reference": "golang-1.10-go"},
          {"reference": "golang-1.10-src"},
          {"reference": "golang-1.8"},
          {"reference": "golang-1.9"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "golang-1.14"},
          {"reference": "golang-1.14-doc"},
          {"reference": "golang-1.14-go"},
          {"reference": "golang-1.14-src"}
        ]
      }
    ]
  },
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "cpp"},
          {"reference": "gcc"},
          {"reference": "gcc-c++"},
          {"reference": "gcc-gfortran"},
          {"reference": "gcc-gnat"},
          {"reference": "gcc-go"},
          {"reference": "gcc-objc"},
          {"reference": "gcc-objc++"},
          {"reference": "gcc-plugin-devel"},
          {"reference": "libasan"},
          {"reference": "libasan-static"},
          {"reference": "libatomic"},
          {"reference": "libatomic-static"},
          {"reference": "libgcc"},
          {"reference": "libgfortran"},
          {"reference": "libgfortran-static"},
          {"reference": "libgnat"},
          {"reference": "libgnat-devel"},
          {"reference": "libgnat-static"},
          {"reference": "libgo"},
          {"reference": "libgo-devel"},
          {"reference": "libgo-static"},
          {"reference": "libgomp"},
          {"reference": "libitm"},
          {"reference": "libitm-devel"},
          {"reference": "libitm-static"},
          {"reference": "libmudflap"},
          {"reference": "libmudflap-devel"},
          {"reference": "libmudflap-static"},
          {"reference": "libobjc"},
          {"reference": "libquadmath"},
          {"reference": "libquadmath-devel"},
          {"reference": "libquadmath-static"},
          {"reference": "libstdc++"},
          {"reference": "libstdc++-devel"},
          {"reference": "libstdc++-docs"},
          {"reference": "libstdc++-static"},
          {"reference": "libtsan"},
          {"reference": "libtsan-static"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "cpp"},
          {"reference": "gcc"},
          {"reference": "gcc-c++"},
          {"reference": "gcc-gfortran"},
          {"reference": "gcc-gnat"},
          {"reference": "gcc-go"},
          {"reference": "gcc-objc"},
          {"reference": "gcc-objc++"},
          {"reference": "gcc-plugin-devel"},
          {"reference": "libasan"},
          {"reference": "libasan-static"},
          {"reference": "libatomic"},
          {"reference": "libatomic-static"},
          {"reference": "libgcc"},
          {"reference": "libgfortran"},
          {"reference": "libgfortran-static"},
          {"reference": "libgnat"},
          {"reference": "libgnat-devel"},
          {"reference": "libgnat-static"},
          {"reference": "libgo"},
          {"reference": "libgo-devel"},
          {"reference": "libgo-static"},
          {"reference": "libgomp"},
          {"reference": "libitm"},
          {"reference": "libitm-devel"},
          {"reference": "libitm-static"},
          {"reference": "libmudflap"},
          {"reference": "libmudflap-devel"},
          {"reference": "libmudflap-static"},
          {"reference": "libobjc"},
          {"reference": "libquadmath"},
          {"reference": "libquadmath-devel"},
          {"reference": "libquadmath-static"},
          {"reference": "libstdc++"},
          {"reference": "libstdc++-devel"},
          {"reference": "libstdc++-docs"},
          {"reference": "libstdc++-static"},
          {"reference": "libtsan"},
          {"reference": "libtsan-static"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');
var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}