Vulnerabilities > CVE-2007-2954 - Buffer Errors vulnerability in Novell Client 4.91

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
novell
CWE-119
critical
nessus
NVD
Published: 2007-08-31
Updated: 2017-07-29

Summary

Multiple stack-based buffer overflows in the Spooler service (nwspool.dll) in Novell Client 4.91 SP2 through SP4 for Windows allow remote attackers to execute arbitrary code via certain long arguments to the (1) RpcAddPrinterDriver, (2) RpcGetPrinterDriverDirectory, and other unspecified RPC requests, aka Novell bug 300870, a different vulnerability than CVE-2006-5854.

Vulnerable Configurations

Part Description Count
Application
Novell
3

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 familyWindows
NASL idNOVELL_NWSPOOL_BUG300870.NASL
descriptionThe file
last seen2020-06-01
modified2020-06-02
plugin id25952
published2007-08-30
reporterThis script is Copyright (C) 2007-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/25952
titleNovell Client nwspool.dll RPC Printer Functions Remote Overflow (300870)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(25952);
  script_version("1.18");
  script_cvs_date("Date: 2018/11/15 20:50:27");

  script_cve_id("CVE-2007-2954");
  script_bugtraq_id(25474);

  script_name(english:"Novell Client nwspool.dll RPC Printer Functions Remote Overflow (300870)");
  script_summary(english:"Checks file version of nwspool.dll");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host contains a DLL that is affected by multiple
buffer overflow vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The file 'nwspool.dll' included with the Novell Client software on the
remote host reportedly contains several buffer overflow
vulnerabilities that can be triggered via specially crafted RPC
requests. An unauthenticated, remote attacker may be able to leverage
these issues with overly long arguments to RPC requests such as
'RpcAddPrinterDriver' and 'RpcGetPrinterDriverDirectory' to cause a
denial of service or to execute arbitrary code remotely on the
affected host.");
  script_set_attribute(attribute:"see_also", value:"https://secuniaresearch.flexerasoftware.com/secunia_research/2007-57/advisory/");
  script_set_attribute(attribute:"see_also", value:"http://download.novell.com/Download?buildid=VOXNZb-6t_g~" );
  script_set_attribute(attribute:"solution", value:
"Install the 491psp2_3_4_nwspool.zip Field Test File per the vendor
advisory referenced above.");
  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_canvas", value:"true");
 script_set_attribute(attribute:"canvas_package", value:'CANVAS');
 script_cwe_id(119);

  script_set_attribute(attribute:"vuln_publication_date", value:"2007/08/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2007/08/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/08/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");
  script_copyright(english:"This script is Copyright (C) 2007-2018 Tenable Network Security, Inc.");
  script_dependencies("smb_hotfixes.nasl");
  script_require_keys("SMB/Registry/Enumerated");
  script_require_ports(139, 445);
  exit(0);
}

#

include("audit.inc");
include("misc_func.inc");
include("smb_func.inc");
include("smb_hotfixes.inc");


if (!get_kb_item("SMB/Registry/Enumerated")) exit(1, "KB 'SMB/Registry/Enumerated' not set to TRUE.");


# Unless we're being paranoid, check whether the software's installed.
if (report_paranoia < 2)
{
  subkey = "{Novell Client for Windows}";
  key = string("SMB/Registry/HKLM/SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall/", subkey, "/DisplayName");
  get_kb_item_or_exit(key);
}


# Connect to the appropriate share.
port    =  kb_smb_transport();
login   =  kb_smb_login();
pass    =  kb_smb_password();
domain  =  kb_smb_domain();

if(! smb_session_init()) audit(AUDIT_FN_FAIL, 'smb_session_init');

# Check the version of nwspool.dll.
winroot = hotfix_get_systemroot();
if (!winroot) exit(1);

share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:winroot);
dll =  ereg_replace(pattern:"^[A-Za-z]:(.*)", replace:"\1\System32\nwspool.dll", string:winroot);

rc = NetUseAdd(login:login, password:pass, domain:domain, share:share);
if (rc != 1)
{
  NetUseDel();
  audit(AUDIT_SHARE_FAIL,share);
}

fh = CreateFile(
  file:dll,
  desired_access:GENERIC_READ,
  file_attributes:FILE_ATTRIBUTE_NORMAL,
  share_mode:FILE_SHARE_READ,
  create_disposition:OPEN_EXISTING
);
info = "";
if (!isnull(fh))
{
  ver = GetFileVersion(handle:fh);
  CloseFile(handle:fh);

  # nb: for older versions, the file version will be null.
  if (isnull(ver)) info = "  " + winroot + "\System32\nwspool.dll (unknown file version" + ')\n';
  else
  {
    fix = split("4.91.5.0", sep:'.', keep:FALSE);
    for (i=0; i<max_index(fix); i++)
      fix[i] = int(fix[i]);

    for (i=0; i<max_index(ver); i++)
      if ((ver[i] < fix[i]))
      {
        version = string(ver[0], ".", ver[1], ".", ver[2], ".", ver[3]);
        info += "  " + winroot + "\System32\nwspool.dll (file version=" + version + ')\n';
        break;
      }
      else if (ver[i] > fix[i])
        break;
  }
}
NetUseDel();


# Issue a report if a vulnerable version of the file was found.
if (info)
{
  report = string(
    "The following file(s) are affected :\n",
    "\n",
    info
  );
  security_hole(port:port, extra:report);
}

References