WinSCP 5.x < 5.5.5 Multiple Vulnerabilities

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

include("compat.inc");

if (description)
{
  script_id(78078);
  script_version("1.8");
  script_cvs_date("Date: 2019/11/25");

  script_cve_id(
    "CVE-2014-3505",
    "CVE-2014-3506",
    "CVE-2014-3507",
    "CVE-2014-3508",
    "CVE-2014-3509",
    "CVE-2014-3510",
    "CVE-2014-3511",
    "CVE-2014-3512",
    "CVE-2014-5139"
  );
  script_bugtraq_id(
    69075,
    69076,
    69077,
    69078,
    69079,
    69081,
    69082,
    69083,
    69084
  );

  script_name(english:"WinSCP 5.x < 5.5.5 Multiple Vulnerabilities");
  script_summary(english:"Checks version of WinSCP.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host has an application installed that is affected
by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The WinSCP program installed on the remote host is version 4.3.8,
4.3.9, 4.4.0, or 5.x prior to 5.5.5. It therefore contains a bundled
version of OpenSSL prior to 1.0.1i which is affected by the following
vulnerabilities :

  - A memory double-free error exists related to handling
    DTLS packets that allows denial of service attacks.
    (CVE-2014-3505)

  - An unspecified error exists related to handling DTLS
    handshake messages that allows denial of service attacks
    due to large amounts of memory being consumed.
    (CVE-2014-3506)

  - A memory leak error exists related to handling
    specially crafted DTLS packets that allows denial of
    service attacks. (CVE-2014-3507)

  - An error exists related to 'OBJ_obj2txt' and the pretty
    printing 'X509_name_*' functions which leak stack data,
    resulting in an information disclosure. (CVE-2014-3508)

  - An error exists related to 'ec point format extension'
    handling and multithreaded clients that allows freed
    memory to be overwritten during a resumed session.
    (CVE-2014-3509)

  - A NULL pointer dereference error exists related to
    handling anonymous ECDH cipher suites and crafted
    handshake messages that allow denial of service attacks
    against clients. (CVE-2014-3510)

  - An error exists related to handling fragmented
    'ClientHello' messages that allows a man-in-the-middle
    attacker to force usage of TLS 1.0 regardless of higher
    protocol levels being supported by both the server and
    the client. (CVE-2014-3511)

  - A buffer overflow error exists related to handling
    Secure Remote Password protocol (SRP) parameters having
    unspecified impact. (CVE-2014-3512)

  - A NULL pointer dereference error exists related to
    handling Secure Remote Password protocol (SRP) that
    allows a malicious server to crash a client, resulting
    in a denial of service. (CVE-2014-5139)");
  script_set_attribute(attribute:"see_also", value:"https://winscp.net/eng/docs/history#5.5.5");
  script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/openssl-1.0.1-notes.html");
  script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/secadv/20140806.txt");
  script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/vulnerabilities.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to WinSCP version 5.5.5 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-3512");

  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:"2014/08/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/08/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:winscp:winscp");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("winscp_installed.nbin");
  script_require_keys("installed_sw/WinSCP");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("install_func.inc");

app = 'WinSCP';
fixed_version = '5.5.5';

install = get_single_install(app_name:app, exit_if_unknown_ver:TRUE);

version = install['version'];
path = install['path'];

if (
  # 4.3.8 uses OpenSSL 1.0.1c
  version == '4.3.8.1771' ||
  # 4.3.9 uses OpenSSL 1.0.1c
  version == '4.3.9.1817' ||
  # 4.4.0 uses OpenSSL 1.0.1c
  version == '4.4.0.1904' ||
  # 5.0.7 >= version < 5.5.4
  (
    version =~ "^5\." &&
    ver_compare(ver:version, fix:"5.0.7.2268", strict:FALSE) >= 0 &&
    ver_compare(ver:version, fix:"5.5.5.4605", strict:FALSE) < 0
  )
)
{
  port = get_kb_item("SMB/transport");
  if (!port) port = 445;

  if (report_verbosity > 0)
  {
    report =
      '\n  Path              : ' + path +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : ' + fixed_version + 
      '\n';
    security_hole(port:port, extra:report);
  }
  else security_hole(port);
}
else audit(AUDIT_INST_PATH_NOT_VULN, app, version, path);