TigerVNC SSL Certificate Validation Security Bypass Vulnerability - Windows

# SPDX-FileCopyrightText: 2011 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

CPE = "cpe:/a:tigervnc:tigervnc";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.801898");
  script_version("2024-02-15T05:05:39+0000");
  script_tag(name:"last_modification", value:"2024-02-15 05:05:39 +0000 (Thu, 15 Feb 2024)");
  script_tag(name:"creation_date", value:"2011-06-13 15:28:04 +0200 (Mon, 13 Jun 2011)");
  script_cve_id("CVE-2011-1775");
  script_tag(name:"cvss_base", value:"5.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_name("TigerVNC SSL Certificate Validation Security Bypass Vulnerability - Windows");
  script_xref(name:"URL", value:"https://bugzilla.redhat.com/show_bug.cgi?id=702470");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/47738");
  script_xref(name:"URL", value:"http://www.mail-archive.com/[email protected]/msg01345.html");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2011 Greenbone AG");
  script_family("General");
  script_dependencies("gb_tigervnc_detect_win.nasl");
  script_mandatory_keys("TigerVNC6432/Win/Installed");
  script_tag(name:"impact", value:"Successful exploitation allows attackers to perform
man-in-the-middle attacks or impersonate trusted servers, which will aid in
further attacks.");
  script_tag(name:"affected", value:"TigerVNC version 1.1beta1");
  script_tag(name:"insight", value:"The flaw is caused by improper verification of server's X.509
certificate, which allows man-in-the-middle attackers to spoof a TLS VNC server
via an arbitrary certificate.");
  script_tag(name:"solution", value:"No known solution was made available for at least one year since the disclosure
  of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer
  release, disable respective features, remove the product or replace the product by another one.");
  script_tag(name:"summary", value:"TigerVNC is prone to a security bypass vulnerability.");
  script_tag(name:"qod_type", value:"registry");
  script_tag(name:"solution_type", value:"WillNotFix");
  exit(0);
}

include("version_func.inc");
include("host_details.inc");

ver = get_app_version(cpe:CPE);
if(ver)
{
  if(version_is_equal(version:ver, test_version:"1.0.90")){
    security_message( port: 0, data: "The target host was found to be vulnerable" );
  }
}