Helix RealServer Buffer Overrun

# SPDX-FileCopyrightText: 2003 Montgomery County Maryland Government Security Team
# 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("1.3.6.1.4.1.25623.1.0.11642");
  script_version("2023-08-03T05:05:16+0000");
  script_tag(name:"last_modification", value:"2023-08-03 05:05:16 +0000 (Thu, 03 Aug 2023)");
  script_tag(name:"creation_date", value:"2005-11-03 14:08:04 +0100 (Thu, 03 Nov 2005)");
  script_cve_id("CVE-2003-0725");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_name("Helix RealServer Buffer Overrun");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2003 Montgomery County Maryland Government Security Team");
  script_family("Gain a shell remotely");
  script_dependencies("rtsp_detect.nasl");
  script_require_ports("Services/rtsp", 554);
  script_mandatory_keys("RTSP/server_banner/available");

  script_tag(name:"solution", value:"Install patches from the vendor.");

  script_tag(name:"summary", value:"RealServer 8.0 and earlier and Helix Server 9.0 is
  vulnerable to a buffer overflow vulnerability.");

  script_xref(name:"URL", value:"http://service.real.com/help/faq/security/bufferoverrun030303.html");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/8476");

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

  exit(0);
}

include("misc_func.inc");
include("port_service_func.inc");

port = service_get_port(default:554, proto:"rtsp");

serverbanner = get_kb_item("RTSP/" + port + "/server_banner");
if(!serverbanner || "Version " >!< serverbanner)
  exit(0);

# Currently, all versions up to and including 9.0.1 are affected
if((egrep(pattern:"Version [0-8]\.[0-9]", string:serverbanner)) || (egrep(pattern:"Version 9\.0\.[01]", string:serverbanner)) ) {
  security_message(port:port);
  exit(0);
}

exit(99);