Linux Distros Unpatched Vulnerability : CVE-2020-7064

##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(230221);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/09/29");

  script_cve_id("CVE-2020-7064");
  script_xref(name:"CEA-ID", value:"CEA-2021-0004");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2020-7064");

  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.

  - In PHP versions 7.2.x below 7.2.9, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while parsing EXIF data with
    exif_read_data() function, it is possible for malicious data to cause PHP to read one byte of
    uninitialized memory. This could potentially lead to information disclosure or crash. (CVE-2020-7064)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2020-7064");
  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:M/Au:N/C:P/I:N/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:L/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-7064");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/03/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:apcu-panel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libzip");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libzip-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libzip-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-common");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-embedded");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-ffi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-fpm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-gd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-gmp");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-json");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-opcache");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pecl-rrd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pecl-xdebug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pecl-xdebug3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pecl-zip");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-pgsql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-process");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-recode");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-snmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-soap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-xml");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:php-xmlrpc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:apcu-panel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libzip");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:php");
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  script_category(ACT_GATHER_INFO);
  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");
  script_require_ports("Host/OS/CentOS Linux-8", "Host/OS/Red Hat Enterprise Linux-8");

  exit(0);
}

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/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "apcu-panel"},
          {"reference": "libzip"},
          {"reference": "libzip-devel"},
          {"reference": "libzip-tools"},
          {"reference": "php"},
          {"reference": "php-bcmath"},
          {"reference": "php-cli"},
          {"reference": "php-common"},
          {"reference": "php-dba"},
          {"reference": "php-dbg"},
          {"reference": "php-devel"},
          {"reference": "php-embedded"},
          {"reference": "php-enchant"},
          {"reference": "php-ffi"},
          {"reference": "php-fpm"},
          {"reference": "php-gd"},
          {"reference": "php-gmp"},
          {"reference": "php-intl"},
          {"reference": "php-json"},
          {"reference": "php-ldap"},
          {"reference": "php-mbstring"},
          {"reference": "php-mysqlnd"},
          {"reference": "php-odbc"},
          {"reference": "php-opcache"},
          {"reference": "php-pdo"},
          {"reference": "php-pear"},
          {"reference": "php-pecl-apcu"},
          {"reference": "php-pecl-apcu-devel"},
          {"reference": "php-pecl-rrd"},
          {"reference": "php-pecl-xdebug"},
          {"reference": "php-pecl-xdebug3"},
          {"reference": "php-pecl-zip"},
          {"reference": "php-pgsql"},
          {"reference": "php-process"},
          {"reference": "php-recode"},
          {"reference": "php-snmp"},
          {"reference": "php-soap"},
          {"reference": "php-xml"},
          {"reference": "php-xmlrpc"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "apcu-panel"},
          {"reference": "libzip"},
          {"reference": "libzip-devel"},
          {"reference": "libzip-tools"},
          {"reference": "php"},
          {"reference": "php-bcmath"},
          {"reference": "php-cli"},
          {"reference": "php-common"},
          {"reference": "php-dba"},
          {"reference": "php-dbg"},
          {"reference": "php-devel"},
          {"reference": "php-embedded"},
          {"reference": "php-enchant"},
          {"reference": "php-ffi"},
          {"reference": "php-fpm"},
          {"reference": "php-gd"},
          {"reference": "php-gmp"},
          {"reference": "php-intl"},
          {"reference": "php-json"},
          {"reference": "php-ldap"},
          {"reference": "php-mbstring"},
          {"reference": "php-mysqlnd"},
          {"reference": "php-odbc"},
          {"reference": "php-opcache"},
          {"reference": "php-pdo"},
          {"reference": "php-pear"},
          {"reference": "php-pecl-apcu"},
          {"reference": "php-pecl-apcu-devel"},
          {"reference": "php-pecl-rrd"},
          {"reference": "php-pecl-xdebug"},
          {"reference": "php-pecl-xdebug3"},
          {"reference": "php-pecl-zip"},
          {"reference": "php-pgsql"},
          {"reference": "php-process"},
          {"reference": "php-recode"},
          {"reference": "php-snmp"},
          {"reference": "php-soap"},
          {"reference": "php-xml"},
          {"reference": "php-xmlrpc"}
        ]
      }
    ]
  }
};

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');
}