OpenSSL 1.0.2 < 1.0.2h Multiple Vulnerabilities

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

include("compat.inc");

if (description)
{
  script_id(90891);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/08/21");

  script_cve_id(
    "CVE-2016-2105",
    "CVE-2016-2106",
    "CVE-2016-2107",
    "CVE-2016-2109",
    "CVE-2016-2176"
  );
  script_bugtraq_id(
    87940,
    89744,
    89746,
    89757,
    89760
  );
  script_xref(name:"EDB-ID", value:"39768");

  script_name(english:"OpenSSL 1.0.2 < 1.0.2h 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 1.0.2h. It is, therefore, affected by the
following vulnerabilities :

  - A heap buffer overflow condition exists in the
    EVP_EncodeUpdate() function within file
    crypto/evp/encode.c that is triggered when handling
    a large amount of input data. An unauthenticated, remote
    attacker can exploit this to cause a denial of service
    condition. (CVE-2016-2105)

  - A heap buffer overflow condition exists in the
    EVP_EncryptUpdate() function within file
    crypto/evp/evp_enc.c that is triggered when handling a
    large amount of input data after a previous call occurs
    to the same function with a partial block. An
    unauthenticated, remote attacker can exploit this to
    cause a denial of service condition. (CVE-2016-2106)

  - Flaws exist in the aesni_cbc_hmac_sha1_cipher()
    function in file crypto/evp/e_aes_cbc_hmac_sha1.c and
    the aesni_cbc_hmac_sha256_cipher() function in file
    crypto/evp/e_aes_cbc_hmac_sha256.c that are triggered
    when the connection uses an AES-CBC cipher and AES-NI
    is supported by the server. A man-in-the-middle attacker
    can exploit these to conduct a padding oracle attack,
    resulting in the ability to decrypt the network traffic.
    (CVE-2016-2107)

  - Multiple unspecified flaws exist in the d2i BIO
    functions when reading ASN.1 data from a BIO due to
    invalid encoding causing a large allocation of memory.
    An unauthenticated, remote attacker can exploit these to
    cause a denial of service condition through resource
    exhaustion. (CVE-2016-2109)

  - An out-of-bounds read error exists in the
    X509_NAME_oneline() function within file
    crypto/x509/x509_obj.c when handling very long ASN1
    strings. An unauthenticated, remote attacker can exploit
    this to disclose the contents of stack memory.
    (CVE-2016-2176)");
  script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/secadv/20160503.txt");
  script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/cl102.txt");
  script_set_attribute(attribute:"solution", value:
"Upgrade to OpenSSL version 1.0.2h or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:N/S:U/C:L/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-2176");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/04/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/05/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/04");

  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) 2016-2023 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' : '1.0.2h'}];

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