Vulnerabilities > CVE-2007-6273 - USE of Externally-Controlled Format String vulnerability in Sonicwall Global VPN Client 3.1.556/4.0.0.810

047910
CVSS 9.3 - CRITICAL
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
sonicwall
CWE-134
critical
nessus
exploit available
NVD
Published: 2007-12-07
Updated: 2011-03-08

Summary

Multiple format string vulnerabilities in the configuration file in SonicWALL GLobal VPN Client 3.1.556 and 4.0.0.810 allow user-assisted remote attackers to execute arbitrary code via format string specifiers in the (1) Hostname tag or the (2) name attribute in the Connection tag. NOTE: there might not be any realistic circumstances in which this issue crosses privilege boundaries.

Vulnerable Configurations

Part Description Count
Application
Sonicwall
2

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Format String Injection
    An attacker includes formatting characters in a string input field on the target application. Most applications assume that users will provide static text and may respond unpredictably to the presence of formatting character. For example, in certain functions of the C programming languages such as printf, the formatting character %s will print the contents of a memory location expecting this location to identify a string and the formatting character %n prints the number of DWORD written in the memory. An attacker can use this to read or write to memory locations or files, or simply to manipulate the value of the resulting text in unexpected ways. Reading or writing memory may result in program crashes and writing memory could result in the execution of arbitrary code if the attacker can write to the program stack.
  • String Format Overflow in syslog()
    This attack targets the format string vulnerabilities in the syslog() function. An attacker would typically inject malicious input in the format string parameter of the syslog function. This is a common problem, and many public vulnerabilities and associated exploits have been posted.

Exploit-Db

descriptionSonicWALL Global VPN Client 4.0.782 Remote Format String Vulnerability. CVE-2007-6273. Dos exploit for windows platform
idEDB-ID:30840
last seen2016-02-03
modified2007-12-04
published2007-12-04
reporterSEC Consult
sourcehttps://www.exploit-db.com/download/30840/
titleSonicWALL Global VPN Client 4.0.782 - Remote Format String Vulnerability

Nessus

NASL familyWindows
NASL idSONICWALL_VPN_CLIENT_4_0_0_830.NASL
descriptionThe version of the SonicWALL Global VPN Client software installed on the remote Windows host fails to sanitize the
last seen2020-06-01
modified2020-06-02
plugin id38929
published2009-05-27
reporterThis script is Copyright (C) 2009-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/38929
titleSonicWALL Global VPN Client < 4.0.0.830 Format String Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#


include("compat.inc");


if (description)
{
  script_id(38929);
  script_version("1.10");

  script_cve_id("CVE-2007-6273");
  script_bugtraq_id(26689);
  script_xref(name:"Secunia", value:"27917");

  script_name(english:"SonicWALL Global VPN Client < 4.0.0.830 Format String Vulnerabilities");
  script_summary(english:"Checks client's version number");

  script_set_attribute(  attribute:"synopsis",  value:
"The remote Windows host contains a program that is affected by multiple
format string vulnerabilities."  );
  script_set_attribute(  attribute:"description",   value:
"The version of the SonicWALL Global VPN Client software installed on
the remote Windows host fails to sanitize the 'name' attribute of the
'Connection' tag and the content of the 'Hostname' tag in the
configuration file of format strings.  If an attacker can trick a user
on the affected host into importing a specially crafted configuration
file, the attacker could leverage this issue to execute arbitrary code 
on the affected host subject to the user's privileges."  );
   # https://www.sec-consult.com/files/20071204-0-sonicwall-globalVPN-fmtstring.txt
  script_set_attribute(
    attribute:"see_also", 
    value:"http://www.nessus.org/u?a0715256"
  );
  script_set_attribute(
    attribute:"see_also", 
    value:"https://seclists.org/bugtraq/2007/Dec/21"
  );
  script_set_attribute(  attribute:"solution",  value:
"Upgrade to SonicWALL VPN client 4.0.0.830 as that reportedly resolves
the issue."  );
 script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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_cwe_id(134);
 script_set_attribute(attribute:"plugin_publication_date", value: "2009/05/27");
 script_cvs_date("Date: 2018/11/15 20:50:28");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe",value:"cpe:/a:sonicwall:global_vpn_client");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2009-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("sonicwall_vpn_client_detect.nasl");
  script_require_keys("SMB/SonicWallGlobalVPNClient/Version");

  exit(0);
}


include("global_settings.inc");


version = get_kb_item("SMB/SonicWallGlobalVPNClient/Version");
if (isnull(version)) exit(0);

ver = split(version, sep:'.', keep:FALSE);
for (i=0; i<max_index(ver); i++)
  ver[i] = int(ver[i]);

if (
  ver[0] < 4 ||
  (ver[0] == 4 && ver[1] == 0 && ver[2] == 0 && ver[3] < 830)
)
{
  if (report_verbosity > 0)
  {
    report = string(
      "\n",
      "SonicWALL Global VPN Client version ", version, " is currently installed on\n",
      "the remote host.\n"
    );
    security_hole(port:get_kb_item("SMB/transport"), extra:report);
  }
  else security_hole(get_kb_item("SMB/transport"));
}

References