Vulnerabilities > CVE-2008-5911 - Buffer Errors vulnerability in Realnetworks Helix Server and Helix Server Mobile

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
NVD
Published: 2009-01-20
Updated: 2011-03-08

Summary

Multiple buffer overflows in RealNetworks Helix Server and Helix Mobile Server 11.x before 11.1.8 and 12.x before 12.0.1 allow remote attackers to (1) cause a denial of service via three crafted RTSP SETUP commands, or execute arbitrary code via (2) an NTLM authentication request with malformed base64-encoded data, (3) an RTSP DESCRIBE command, or (4) a DataConvertBuffer request. Per: http://docs.real.com/docs/security/SecurityUpdate121508HS.pdf Impacted Products and Versions: Helix Server Version 11.x Helix Server Version 12.x Helix Mobile Server Version 11.x Helix Mobile Server Version 12.x Per: http://docs.real.com/docs/security/SecurityUpdate121508HS.pdf The Fix: Version 11.1.8 and Version 12.0.1 of the Helix Server and the Helix Mobile Server have been updated to ensure that the above vulnerabilities have been resolved. SOLUTION: The vulnerability is resolved on the following platforms by installing Version 11.1.8 or Version 12.0.1 of the Helix Server and the Helix Mobile Server. This only pertains to supported versions of the platforms listed below. The updated version will be available on your RealNetworks PAM site after 11:59 p.m. PST, on December 15, 2008.

Vulnerable Configurations

Part Description Count
Application
Realnetworks
4

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.

Nessus

NASL familyGain a shell remotely
NASL idHELIX_SVR_REMOTE_CODE_EXEC.NASL
descriptionThe remote host is running a version of RealNetworks Helix Server older than 11.1.8 / 12.0.1. Such versions are reportedly affected by multiple issues : - A vulnerability involving an RTSP
last seen2020-06-01
modified2020-06-02
plugin id35555
published2009-01-30
reporterThis script is Copyright (C) 2009-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/35555
titleRealNetworks Helix Server < 11.1.8/12.0.1 Multiple Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#


include("compat.inc");

if (description)
{
 script_id(35555);
 script_version ("1.9");

 script_cve_id("CVE-2008-5911");
 script_bugtraq_id(33059);
 script_xref(name:"Secunia", value:"33360");
 
 script_name(english:"RealNetworks Helix Server < 11.1.8/12.0.1 Multiple Vulnerabilities");

 script_set_attribute(attribute:"synopsis", value:
"The remote media streaming server is affected by multiple
vulnerabilities." );
 script_set_attribute(attribute:"description", value:
"The remote host is running a version of RealNetworks Helix Server
older than 11.1.8 / 12.0.1.  Such versions are reportedly affected by
multiple issues :

  - A vulnerability involving an RTSP 'DESCRIBE' request 
    could  allow an unauthenticated attacker to execute 
    arbitrary code on the remote system. (ZDI-CAN-293)

  - By sending three specially crafted RTSP 'SETUP' requests
    it may be possible to crash the remote RTSP server. 
    (ZDI-CAN-323)
 
  - A heap overflow vulnerability in 'DataConvertBuffer',
    could allow an unauthenticated attacker to execute 
    arbitrary code on the remote system. (ZDI-CAN-333)

  - A heap overflow vulnerability in NTLM Authentication
    could allow an unauthenticated attacker to execute 
    arbitrary code on the remote system. (ZDI-CAN-380)" );
 script_set_attribute(attribute:"see_also", value:"http://docs.real.com/docs/security/SecurityUpdate121508HS.pdf" );
 script_set_attribute(attribute:"solution", value:
"Update to RealNetworks Helix Server 11.1.8 / 12.0.1 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:F/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:"exploit_framework_core", value:"true");
 script_cwe_id(119);

 script_set_attribute(attribute:"plugin_publication_date", value: "2009/01/30");
 script_cvs_date("Date: 2018/07/12 19:01:15");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_end_attributes();

 script_summary(english:"Checks version of RealNetworks Helix Server");
 script_category(ACT_GATHER_INFO);
 script_copyright(english:"This script is Copyright (C) 2009-2018 Tenable Network Security, Inc.");
 script_family(english:"Gain a shell remotely");
 script_dependencies("rtsp_detect.nasl");
 script_require_ports("Services/rtsp", 554);
 exit(0);
}

include("global_settings.inc");

port = get_kb_item("Services/rtsp");
if ( ! port ) port = 554;

if (!get_port_state(port)) exit(0);

serv = get_kb_item(string("rtsp/server/",port));

if (!serv || !ereg(pattern:"Helix (Mobile|) *Server Version",string:serv)) exit(0);

# Currently, versions  11.x ( < 11.1.8) and 12.x (< 12.0.1) are affected 

if (
  ereg(pattern:"Version 11\.(0\.[0-9]|1\.[0-7]($|[^0-9]))", string:serv) ||
  ereg(pattern:"Version 12.0.0[^0-9]", string:serv)
) 
{
  if (report_verbosity)
  { 
    report = string(
      '\n',
      'The remote Helix server responded with the following banner :\n',
      '\n',
       '  ', serv,'\n'
    );
    security_hole(port:port,extra:report);
  }
  else security_hole(port);
}

Saint

bid33059
descriptionRealNetworks Helix Server RTSP Proxy-Require heap overflow
idmisc_helixserver,misc_helixserverbo
titlehelix_proxy_require
typeremote

References