Pidgin XMPP And SILC Protocols Denial of Service Vulnerabilities - 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.902650");
  script_version("2025-03-05T05:38:53+0000");
  script_cve_id("CVE-2011-4602", "CVE-2011-4603", "CVE-2011-4601");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"last_modification", value:"2025-03-05 05:38:53 +0000 (Wed, 05 Mar 2025)");
  script_tag(name:"creation_date", value:"2011-12-21 11:02:55 +0530 (Wed, 21 Dec 2011)");
  script_name("Pidgin XMPP And SILC Protocols Denial of Service Vulnerabilities - Windows");
  script_xref(name:"URL", value:"http://pidgin.im/news/security/?id=57");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/51070");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/51074");
  script_xref(name:"URL", value:"http://pidgin.im/news/security/?id=58");
  script_xref(name:"URL", value:"http://pidgin.im/news/security/?id=59");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2011 Greenbone AG");
  script_family("Denial of Service");
  script_dependencies("secpod_pidgin_detect_win.nasl");
  script_mandatory_keys("Pidgin/Win/Ver");
  script_tag(name:"impact", value:"Successful exploitation will allow remote attackers to cause the application
  to crash, denying service to legitimate users.");
  script_tag(name:"affected", value:"Pidgin versions prior to 2.10.1");
  script_tag(name:"insight", value:"Multiplw flaws are due to

  - An error in the silc_channel_message function in ops.c in the SILC
    protocol plugin in libpurple, which fails to validate that a piece of text
    was UTF-8 when receiving various incoming messages.

  - An error in the XMPP protocol plugin in libpurple, which fails to ensure
    that the incoming message contained all required fields when receiving
    various stanzas related to voice and video chat.

  - An error in the family_feedbag.c in the oscar protocol plugin, which fails
    to validate that a piece of text was UTF-8 when receiving various incoming
    messages.");
  script_tag(name:"solution", value:"Upgrade to Pidgin version 2.10.1 or later.");
  script_tag(name:"summary", value:"Pidgin is prone to denial of service vulnerabilities.");
  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:"2.10.1")){
    report = report_fixed_ver(installed_version:pidginVer, fixed_version:"2.10.1");
    security_message(port: 0, data: report);
  }
}