OpenSSL 1.0.2 < 1.0.2e Multiple Vulnerabilities

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

include("compat.inc");

if (description)
{
  script_id(87222);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/08/21");

  script_cve_id(
    "CVE-2015-1794",
    "CVE-2015-3193",
    "CVE-2015-3194",
    "CVE-2015-3195"
  );
  script_bugtraq_id(78623, 78626);

  script_name(english:"OpenSSL 1.0.2 < 1.0.2e Multiple Vulnerabilities");
  script_summary(english:"Performs a banner check.");

  script_set_attribute(attribute:"synopsis", value:
"The remote service is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its banner, the remote host is running a version of
OpenSSL 1.0.2 prior to 1.0.2e. It is, therefore, affected by the
following vulnerabilities :

  - A flaw exists in the ssl3_get_key_exchange() function
    in file s3_clnt.c when handling a ServerKeyExchange
    message for an anonymous DH ciphersuite with the value
    of 'p' set to 0. A attacker can exploit this, by causing
    a segmentation fault, to crash an application linked
    against the library, resulting in a denial of service.
    (CVE-2015-1794)

  - A carry propagating flaw exists in the x86_64 Montgomery
    squaring implementation that may cause the BN_mod_exp()
    function to produce incorrect results. An attacker can
    exploit this to obtain sensitive information regarding
    private keys. (CVE-2015-3193)

  - A NULL pointer dereference flaw exists in file
    rsa_ameth.c when handling ASN.1 signatures that use the
    RSA PSS algorithm but are missing a mask generation
    function parameter. A remote attacker can exploit this
    to cause the signature verification routine to crash,
    leading to a denial of service. (CVE-2015-3194)

  - A flaw exists in the ASN1_TFLG_COMBINE implementation in
    file tasn_dec.c related to handling malformed
    X509_ATTRIBUTE structures. A remote attacker can exploit
    this to cause a memory leak by triggering a decoding
    failure in a PKCS#7 or CMS application, resulting in a
    denial of service. (CVE-2015-3195)");
  script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/secadv/20151203.txt");
  # https://mta.openssl.org/pipermail/openssl-commits/2015-August/001540.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1fc69a3d");
  script_set_attribute(attribute:"solution", value:
"Upgrade to OpenSSL version 1.0.2e or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-3193");

  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:"2015/12/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/12/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/12/07");

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

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

  script_copyright(english:"This script is Copyright (C) 2015-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("openssl_version.nasl", "openssl_nix_installed.nbin", "openssl_win_installed.nbin");
  script_require_keys("installed_sw/OpenSSL");

  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' : "1.0.2", 'fixed_version' : '1.0.2e'}];

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