Vulnerabilities > CVE-2010-2115 - Improper Input Validation vulnerability in Solarwinds Tftp Server 10.4.0.10

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
low complexity
solarwinds
CWE-20
nessus
exploit available
metasploit

Summary

SolarWinds TFTP Server 10.4.0.10 allows remote attackers to cause a denial of service (no new connections) via a crafted read request.

Vulnerable Configurations

Part Description Count
Application
Solarwinds
1

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.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Exploit-Db

descriptionSolarwinds 10.4.0.10 TFTP DOS. CVE-2010-2115. Dos exploit for windows platform
fileexploits/windows/dos/12683.pl
idEDB-ID:12683
last seen2016-02-01
modified2010-05-21
platformwindows
port69
published2010-05-21
reporterNullthreat
sourcehttps://www.exploit-db.com/download/12683/
titleSolarwinds 10.4.0.10 - TFTP DoS
typedos

Metasploit

descriptionThe SolarWinds TFTP server can be shut down by sending a 'netascii' read request with a specially crafted file name.
idMSF:AUXILIARY/DOS/WINDOWS/TFTP/SOLARWINDS
last seen2020-05-01
modified2017-07-24
published2010-06-04
referenceshttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2115
reporterRapid7
sourcehttps://github.com/rapid7/metasploit-framework/blob/master//modules/auxiliary/dos/windows/tftp/solarwinds.rb
titleSolarWinds TFTP Server 10.4.0.10 Denial of Service

Nessus

NASL familyWindows
NASL idSOLARWINDS_TFTP_SERVER_10_4_0_13.NASL
descriptionAt least one instance of SolarWinds TFTP Server earlier than version 10.4.0.13 is installed on the remote host. Such versions are reportedly affected by a denial of service vulnerability. By sending a specially crafted
last seen2020-06-01
modified2020-06-02
plugin id47137
published2010-06-25
reporterThis script is Copyright (C) 2010-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/47137
titleSolarWinds TFTP Server < 10.4.0.13 DoS
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(47137);
  script_version("1.9");
  script_cvs_date("Date: 2018/07/30 15:31:32");

  script_cve_id("CVE-2010-2115");
  script_bugtraq_id(40333);
  script_xref(name:"EDB-ID",  value:"12683");
  script_xref(name:"Secunia", value:"39896");

  script_name(english:"SolarWinds TFTP Server < 10.4.0.13 DoS");
  script_summary(english:"Checks version of SolarWinds TFTP Server");
 
  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host contains an application that is affected by a
denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"At least one instance of SolarWinds TFTP Server earlier than version
10.4.0.13 is installed on the remote host.  Such versions are
reportedly affected by a denial of service vulnerability. 

By sending a specially crafted 'Read Request' it may be possible for
an attacker to make the server stop accepting additional
connections.");
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0447d82b");
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?31437e59");
  script_set_attribute(attribute:"solution", value:
"Upgrade to version 10.4.0.13, which reportedly fixes this issue.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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_set_attribute(attribute:"vuln_publication_date", value:"2010/05/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2010/05/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/06/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:solarwinds:tftp_server");
  script_end_attributes();
 
  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2010-2018 Tenable Network Security, Inc.");

  script_dependencies("solarwinds_tftp_installed.nasl", "tftpd_detect.nasl");
  script_require_keys("SMB/Solarwinds/tftp_server/Installed");
  script_require_ports(139, 445);

  exit(0);
}

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

if (report_paranoia < 2)
  tftp_port = get_service(svc:"tftp", ipproto:"udp", exit_on_fail:TRUE);

installs = get_kb_list("SMB/Solarwinds/tftp_server/*");
if (isnull(installs)) exit(0,"The 'SMB/Solarwinds/tftp_server/*' KB items are missing.");

fixed_version = "10.4.0.13";
info = info2 = '';
port = get_kb_item("SMB/transport");

foreach install (keys(installs))
{
  if ("/Installed" >< install) continue;

  version = install - "SMB/Solarwinds/tftp_server/";

  if (fixed_version != version)
  {
    fix = split(fixed_version, sep:'.', keep:FALSE);
    for (i=0; i<max_index(fix); i++)
    fix[i] = int(fix[i]);

    ver = split(version, sep:".",keep:FALSE);
    for (i=0; i<max_index(ver); i++)
    ver[i] = int(ver[i]);
 
    for (i=0; i<max_index(ver); i++)
    if (ver[i] < fix[i])
    {
      info +=
      '\n  Path              : ' + installs[install] + 
      '\n  Installed version : ' + version + '\n';
       break;
    }
    else if (ver[i] > fix[i])
    {
      info2 += "SolarWinds TFTP Server version " + version + ", under " + installs[install] + ". ";
      break;
    }
  }
  else
   info2 += "SolarWinds TFTP Server version " + version + ", under " + installs[install] + '. ';
}

if (info)
{
  if (report_verbosity > 0)
  {
    if (max_index(split(info)) > 3)
    {
      report = '\n' +
        'The following vulnerable instances of SolarWinds TFTP Server are installed :' + '\n' +
        info +
        '\n  Fixed version     : ' + fixed_version + '\n';
    }
    else
    {
      report = '\n' +
        'The following vulnerable instance of SolarWinds TFTP Server is installed :' + '\n' +
        info +
        '  Fixed version     : ' + fixed_version + '\n';
    }
    security_warning(port:port, extra:report);
  }
  else security_warning(port);

  exit(0);
}
if (info2)
  exit(0, "The following instance(s) of SolarWinds TFTP Server are installed and are not vulnerable : "+ info2);