QEMU VNC Server Denial of Service Vulnerability - Linux

# SPDX-FileCopyrightText: 2009 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("1.3.6.1.4.1.25623.1.0.900970");
  script_version("2025-03-05T05:38:52+0000");
  script_tag(name:"last_modification", value:"2025-03-05 05:38:52 +0000 (Wed, 05 Mar 2025)");
  script_tag(name:"creation_date", value:"2009-10-31 09:54:01 +0100 (Sat, 31 Oct 2009)");
  script_tag(name:"cvss_base", value:"8.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:S/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2024-02-15 21:06:20 +0000 (Thu, 15 Feb 2024)");
  script_cve_id("CVE-2009-3616");
  script_name("QEMU VNC Server Denial of Service Vulnerability - Linux");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("Buffer overflow");
  script_dependencies("secpod_qemu_detect_lin.nasl");
  script_mandatory_keys("QEMU/Lin/Ver");

  script_xref(name:"URL", value:"https://bugzilla.redhat.com/show_bug.cgi?id=505641");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/36716");
  script_xref(name:"URL", value:"http://www.openwall.com/lists/oss-security/2009/10/16/8");
  script_xref(name:"URL", value:"http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=753b405331");
  script_xref(name:"URL", value:"http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=198a0039c5");

  script_tag(name:"impact", value:"Successful exploitation will let the attacker cause memory or CPU consumption,
  resulting in Denial of Service condition.");

  script_tag(name:"affected", value:"QEMU version 0.10.6 and prior on Linux.");

  script_tag(name:"insight", value:"Multiple use-after-free errors occur in 'vnc.c' in VNC server while processing
  malicious 'SetEncodings' messages sent via VNC client.");

  script_tag(name:"summary", value:"QEMU is prone to a denial of service (DoS) vulnerability.");

  script_tag(name:"solution", value:"Apply the available patches from the referenced repositories.");

  script_tag(name:"qod_type", value:"executable_version_unreliable");
  script_tag(name:"solution_type", value:"VendorFix");

  exit(0);
}

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

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

if( ! infos = get_app_version_and_location( cpe: CPE, exit_no_version: TRUE ) )
  exit( 0 );

location = infos["location"];
version = infos["version"];

if( version_is_less( version: version, test_version:"0.10.6" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "0.11.0", install_path: location );
  security_message( data: report, port: 0 );
  exit( 0 );
}

exit( 99 );