Pidgin Libpurple 'purple_base64_decode()' Denial of Service Vulnerabilities (Windows)

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_pidgin_libpurple_mult_dos_vuln_win.nasl 5373 2017-02-20 16:27:48Z teissa $
#
# Pidgin Libpurple 'purple_base64_decode()' Denial of Service Vulnerabilities (Windows)
#
# Authors:
# Antu Sanadi <[email protected]>
#
# Copyright:
# Copyright (c) 2010 Greenbone Networks GmbH, http://www.greenbone.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
###############################################################################

tag_impact = "Attackers can exploit this issue to crash an affected application.
  Impact Level: Application";
tag_affected = "Pidgin version prior to 2.7.4 on Windows.";
tag_insight = "The issues are caused by errors in 'libpurple' that does not validate the return
  value from 'purple_base64_decode()' function when processing malformed Yahoo!,
  MSN, MySpaceIM, XMPP or NTLM data.";
tag_solution = "Upgrade to Pidgin version 2.7.4 or later.
  For updates refer to  http://pidgin.im/download";
tag_summary = "This host has Pidgin installed and is prone to Denial of Service
  vulnerabilities.";

if(description)
{
  script_id(801536);
  script_version("$Revision: 5373 $");
  script_tag(name:"last_modification", value:"$Date: 2017-02-20 17:27:48 +0100 (Mon, 20 Feb 2017) $");
  script_tag(name:"creation_date", value:"2010-11-04 14:21:53 +0100 (Thu, 04 Nov 2010)");
  script_tag(name:"cvss_base", value:"4.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:N/A:P");
  script_cve_id("CVE-2010-3711");
  script_name("Pidgin Libpurple 'purple_base64_decode()' Denial of Service Vulnerabilities (Windows)");
  script_xref(name : "URL" , value : "http://pidgin.im/news/security/?id=48");
  script_xref(name : "URL" , value : "http://xforce.iss.net/xforce/xfdb/62708");
  script_xref(name : "URL" , value : "http://www.vupen.com/english/advisories/2010/2753");
  script_xref(name : "URL" , value : "http://securitytracker.com/alerts/2010/Oct/1024623.html");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (c) 2010 Greenbone Networks GmbH");
  script_family("Denial of Service");
  script_dependencies("secpod_pidgin_detect_win.nasl");
  script_require_keys("Pidgin/Win/Ver");
  script_tag(name : "impact" , value : tag_impact);
  script_tag(name : "affected" , value : tag_affected);
  script_tag(name : "insight" , value : tag_insight);
  script_tag(name : "solution" , value : tag_solution);
  script_tag(name : "summary" , value : tag_summary);
  script_tag(name:"qod_type", value:"registry");
  script_tag(name:"solution_type", value:"VendorFix");
  exit(0);
}


include("version_func.inc");

pidginVer = get_kb_item("Pidgin/Win/Ver");
if(pidginVer != NULL)
{
  if(version_is_less(version:pidginVer, test_version:"2.7.4")){
    security_message(0);
  }
}