Vulnerabilities > CVE-2006-6026 - Buffer Errors vulnerability in Realnetworks Helix DNA Server, Helix Mobile Server and Helix Server

047910
CVSS 10.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
realnetworks
CWE-119
critical
nessus
exploit available
NVD
Published: 2006-11-21
Updated: 2018-10-17

Summary

Heap-based buffer overflow in Real Networks Helix Server and Helix Mobile Server before 11.1.3, and Helix DNA Server 11.0 and 11.1, allows remote attackers to cause a denial of service (application crash) or execute arbitrary code via a DESCRIBE request that contains an invalid LoadTestPassword field.

Vulnerable Configurations

Part Description Count
Application
Realnetworks
6

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Exploit-Db

descriptionHelix Server 11.0.1 Remote Heap Overflow Exploit (win2k SP4). CVE-2006-6026. Remote exploit for windows platform
fileexploits/windows/remote/3531.py
idEDB-ID:3531
last seen2016-01-31
modified2007-03-21
platformwindows
port554
published2007-03-21
reporterWinny Thomas
sourcehttps://www.exploit-db.com/download/3531/
titleHelix Server 11.0.1 - Remote Heap Overflow Exploit win2k SP4
typeremote

Nessus

NASL familyGain a shell remotely
NASL idHELIX_LOADTESTPASSWORD_OVERFLOW.NASL
descriptionThe remote host is running Helix DNA Server or Helix Server, a media streaming server. The version of the Helix server installed on the remote host contains a heap overflow involving an invalid
last seen2020-06-01
modified2020-06-02
plugin id24876
published2007-03-23
reporterThis script is Copyright (C) 2007-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/24876
titleRealNetworks Helix Servers DESCRIBE Request LoadTestPassword Field Remote Overflow
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(24876);
  script_version("1.18");
  script_cvs_date("Date: 2018/11/15 20:50:22");

  script_cve_id("CVE-2006-6026");
  script_bugtraq_id(21141, 23068);

  script_name(english:"RealNetworks Helix Servers DESCRIBE Request LoadTestPassword Field Remote Overflow");
  script_summary(english:"Checks Helix server banner");

 script_set_attribute(attribute:"synopsis", value:
"The remote RTSP server suffers from a buffer overflow vulnerability." );
 script_set_attribute(attribute:"description", value:
"The remote host is running Helix DNA Server or Helix Server, a media
streaming server. 

The version of the Helix server installed on the remote host contains
a heap overflow involving an invalid 'LoadTestPassword' field.  An
unauthenticated, remote attacker can leverage this flaw using a simple
'DESCRIBE' request to crash the affected application and possibly to
execute arbitrary code subject to the privileges of the user id under
which it runs, which by default on Windows is LOCAL SYSTEM." );
 # http://web.archive.org/web/20070328181828/http://gleg.net/helix.txt
 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6449002c" );
 script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/archive/1/463333/30/0/threaded" );
 # http://lists.helixcommunity.org/pipermail/server-cvs/2007-January/003783.html
 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?27db559a" );
 script_set_attribute(attribute:"see_also", value:"http://docs.real.com/docs/security/SecurityUpdate032107Server.pdf" );
 script_set_attribute(attribute:"solution", value:
"Upgrade to Helix Server / Helix DNA Server version 11.1.3 or later." );
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
 script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
 script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
 script_set_attribute(attribute:"exploit_available", value:"true");
 script_set_attribute(attribute:"plugin_publication_date", value: "2007/03/23");
 script_set_attribute(attribute:"vuln_publication_date", value: "2006/05/02");
 script_set_attribute(attribute:"plugin_type", value:"remote");
 script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Gain a shell remotely");
  script_copyright(english:"This script is Copyright (C) 2007-2018 Tenable Network Security, Inc.");
  script_dependencies("find_service2.nasl");
  script_require_ports("Services/rtsp", 554);

  exit(0);
}

include("global_settings.inc");
include("misc_func.inc");
include("http.inc");


port = get_kb_item("Services/rstp");
if (!port) port = 554;
if (!get_port_state(port)) exit(0);

soc = open_sock_tcp(port);
if (!soc) exit(0);


# Grab the banner.
req = 'OPTIONS * RTSP/1.0\r\nCSeq: 1\r\n\r\n';
send(socket:soc, data:req);
r = http_recv3(socket:soc);
close(soc);
if (isnull(r)) exit(0);


h = parse_http_headers(status_line: r[0], headers: r[1]);
# Pull out the server information.
server = h["server"];
if (!server) server = h["via"];
if (!server) exit(0, "No server info");

# If it's Helix Server / Helix DNA Server...
if (
  stridx(server, "Helix Server Version") == 0 || 
  stridx(server, "Helix DNA Server Version") == 0
)
{
  ver = ereg_replace(pattern:"^.+Version ([0-9\.][^ ]+) .+$", replace:"\1", string:server);
  if (ver && ver =~ "^([0-9]\.|10\.|11\.(0\.|1\.[0-2]\.))")
    security_hole(port);
}

References