OpenSSL < 0.9.7k / 0.9.8c PKCS Padding RSA Signature Forgery Vulnerability

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

include("compat.inc");

if (description)
{
  script_id(17756);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/03/27");

  script_cve_id("CVE-2006-4339");
# See also CVE-2006-4340, CVE-2006-5462, CVE-2007-6721
  script_bugtraq_id(19849);
  script_xref(name:"CERT", value:"845620");

  script_name(english:"OpenSSL < 0.9.7k / 0.9.8c PKCS Padding RSA Signature Forgery Vulnerability");
  script_summary(english:"Does a banner check");

  script_set_attribute(attribute:"synopsis", value:
"The SSL layer on the remote server does not properly verify
signatures.");
  script_set_attribute(attribute:"description", value:
"According to its banner, the remote server is running a version of 
OpenSSL that is earlier than 0.9.7k or 0.9.8c.

These versions do not properly verify PKCS #1 v1.5 signatures and X509
certificates when the RSA exponent is 3.");
  script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/secadv/20060905.txt");
  script_set_attribute(attribute:"see_also", value:"https://www.us-cert.gov/ncas/alerts/ta06-333a");
  script_set_attribute(attribute:"solution", value:"Upgrade to OpenSSL 0.9.7k / 0.9.8c or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/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:L/PR:N/UI:N/S:C/C:L/I:N/A:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2006-4339");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
 script_cwe_id(310);

  script_set_attribute(attribute:"vuln_publication_date", value:"2006/09/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/09/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/01/04");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:openssl:openssl");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Web Servers");

  script_copyright(english:"This script is Copyright (C) 2012-2023 Tenable Network Security, Inc.");

 script_dependencies("openssl_version.nasl", "openssl_nix_installed.nbin", "openssl_win_installed.nbin");
  script_require_keys("openssl/port");

  exit(0);
}

include('vcf.inc');
include('vcf_extras_openssl.inc');


var app_info = vcf::combined_get_app_info(app:'OpenSSL');

vcf::check_all_backporting(app_info:app_info);

var constraints = [ { 'min_version' : '0.0.0', 'fixed_version' : '0.9.7k'},
                    { 'min_version' : '0.9.8', 'fixed_version' : '0.9.8c'} ];

vcf::openssl::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);