VanDyke Software SecureCRT < 8.7.2 Memory Corruption Vulnerability

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

include('compat.inc');

if (description)
{
  script_id(136949);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2020-12651");
  script_xref(name:"IAVA", value:"2020-A-0229");

  script_name(english:"VanDyke Software SecureCRT < 8.7.2 Memory Corruption Vulnerability");

  script_set_attribute(attribute:"synopsis", value:
"A terminal emulation application installed on the remote Windows host is affected
by a memory corruption vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of VanDyke Software SecureCRT installed on the remote Windows host
is prior to 8.7.2. It is, therefore, affected by a memory corruption
vulnerability. An attacker may be able to exploit this vulnerability, via a
malformed response, to corrupt memory in the terminal process and execute
arbitrary code.

Note that Nessus has not tested for these issues but has instead relied only on
the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"https://www.vandyke.com/products/securecrt/history.txt");
  script_set_attribute(attribute:"see_also", value:"https://bugs.chromium.org/p/project-zero/issues/detail?id=2033");
  script_set_attribute(attribute:"solution", value:
"Update to VanDyke Software SecureCRT 8.7.2 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:H/I:H/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-2020-12651");

  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:"2020/05/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/29");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:vandyke:securecrt");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("vandyke_software_securecrt_installed.nbin");
  script_require_keys("SMB/Registry/Enumerated", "installed_sw/VanDyke Software SecureCRT");

  exit(0);
}

include('vcf.inc');

get_kb_item_or_exit('SMB/Registry/Enumerated');

app_info = vcf::get_app_info(app:'VanDyke Software SecureCRT', win_local:TRUE);

constraints = [
  { 'fixed_version' : '8.7.2' }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);