Veritas Backup Exec Agent Browser 8.x < 8.60.3878 HF 68 / 9.0.x < 9.0.4454 HF 30 / 9.1.x < 9.1.4691 HF 40 RCE - Nessus

Critical Plugin ID: 16230

This page contains detailed information about the Veritas Backup Exec Agent Browser 8.x < 8.60.3878 HF 68 / 9.0.x < 9.0.4454 HF 30 / 9.1.x < 9.1.4691 HF 40 RCE Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 16230
Name: Veritas Backup Exec Agent Browser 8.x < 8.60.3878 HF 68 / 9.0.x < 9.0.4454 HF 30 / 9.1.x < 9.1.4691 HF 40 RCE
Filename: veritas_backup_exec_overflow.nasl
Vulnerability Published: 2004-12-16
This Plugin Published: 2005-01-24
Last Modification Time: 2018-08-07
Plugin Version: 1.28
Plugin Type: local
Plugin Family: Windows
Dependencies: smb_hotfixes.nasl
Required KB Items [?]: SMB/Registry/Enumerated

Vulnerability Information

Severity: Critical
Vulnerability Published: 2004-12-16
Patch Published: 2005-02-08
CVE [?]: CVE-2004-1172
CPE [?]: cpe:/a:symantec:veritas_backup_exec, cpe:/a:symantec_veritas:backup_exec

Synopsis

The remote host is affected by a remote code execution vulnerability.

Description

The version of Veritas Backup Exec Agent Browser installed on the remote host is 8.x prior to 8.60.3878 hotfix 68, 9.0.x prior to 9.0.4454 hotfix 30, or 9.1.x prior to 9.1.4691 hotfix 40. It is, therefore, affected by a remote code execution vulnerability in the registration service (benetns.exe) due to a failure to validate the client hostname field during the registration process. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to cause a stack-based buffer overflow, resulting in the execution of arbitrary code.

Solution

Upgrade to Veritas Backup Exec Agent Browser 8.60.3878 hotfix 68 / 9.0.4454 hotfix 30 / 9.1.4691 hotfix 40 or later.

Public Exploits

Target Network Port(s): 139, 445
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB, Core Impact)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the Veritas Backup Exec Agent Browser 8.x < 8.60.3878 HF 68 / 9.0.x < 9.0.4454 HF 30 / 9.1.x < 9.1.4691 HF 40 RCE vulnerability:

Metasploit: exploit/windows/backupexec/name_service
[Veritas Backup Exec Name Service Overflow]
Exploit-DB: exploits/windows/remote/750.c
[EDB-750: Veritas Backup Exec Agent 8.x/9.x - Browser Overflow]
Exploit-DB: exploits/windows/remote/16331.rb
[EDB-16331: Veritas Backup Exec Name Service - Remote Overflow (Metasploit)]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:N/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C

CVSS Base Score:	10.0 (High)
Impact Subscore:	10.0
Exploitability Subscore:	10.0
CVSS Temporal Score:	8.3 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.3 (High)

CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

CVSS Base Score:	9.8 (Critical)
Impact Subscore:	5.9
Exploitability Subscore:	3.9
CVSS Temporal Score:	9.1 (Critical)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	9.1 (Critical)

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Plugin Source

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
 script_id(16230);
 script_version("1.28");
 script_cvs_date("Date: 2018/08/07 11:56:12");

 script_cve_id("CVE-2004-1172");
 script_bugtraq_id(11974);
 script_xref(name:"EDB-ID", value:"750");
 script_xref(name:"CERT", value:"907729");

 script_name(english:"Veritas Backup Exec Agent Browser 8.x < 8.60.3878 HF 68 / 9.0.x < 9.0.4454 HF 30 / 9.1.x < 9.1.4691 HF 40 RCE");
 script_summary(english:"Determines the version of VERITAS Backup Exec Agent Browser.");

 script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by a remote code execution vulnerability.");
 script_set_attribute(attribute:"description", value:
"The version of Veritas Backup Exec Agent Browser installed on the
remote host is 8.x prior to 8.60.3878 hotfix 68, 9.0.x prior to
9.0.4454 hotfix 30, or 9.1.x prior to 9.1.4691 hotfix 40. It is,
therefore, affected by a remote code execution vulnerability in the
registration service (benetns.exe) due to a failure to validate the
client hostname field during the registration process. An
unauthenticated, remote attacker can exploit this, via a specially
crafted request, to cause a stack-based buffer overflow, resulting in
the execution of arbitrary code.");
 # https://web.archive.org/web/20100323040855/http://seer.support.veritas.com/docs/273419.htm
 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?191bec81");
 # https://web.archive.org/web/20050205165626/http://seer.support.veritas.com/docs/273420.htm
 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7aa777ec");
 # https://web.archive.org/web/20050205131442/http://seer.support.veritas.com/docs/273422.htm
 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f0e640a0");
 # https://web.archive.org/web/20060619215201/http://seer.support.veritas.com/docs/273850.htm
 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?03ad9b52");
 script_set_attribute(attribute:"solution", value:
"Upgrade to Veritas Backup Exec Agent Browser 8.60.3878 hotfix 68 /
9.0.4454 hotfix 30 / 9.1.4691 hotfix 40 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_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
 script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/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:"metasploit_name", value:'Veritas Backup Exec Name Service Overflow');
 script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

 script_set_attribute(attribute:"vuln_publication_date", value:"2004/12/16");
 script_set_attribute(attribute:"patch_publication_date", value:"2005/02/08");
 script_set_attribute(attribute:"plugin_publication_date", value:"2005/01/24");

 script_set_attribute(attribute:"plugin_type", value:"local");
 script_set_attribute(attribute:"cpe", value:"cpe:/a:symantec:veritas_backup_exec");
 script_set_attribute(attribute:"cpe", value:"cpe:/a:symantec_veritas:backup_exec");
 script_end_attributes();

 script_category(ACT_GATHER_INFO);
 script_copyright(english:"This script is Copyright (C) 2005-2018 Tenable Network Security, Inc.");
 script_family(english:"Windows");
 script_dependencies("smb_hotfixes.nasl");
 script_require_keys("SMB/Registry/Enumerated");
 script_require_ports(139, 445);
 exit(0);
}

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

if ( ! get_kb_item("SMB/Registry/Enumerated") ) exit(1);

name 	=  kb_smb_name();
login	=  kb_smb_login();
pass  	=  kb_smb_password();
domain 	=  kb_smb_domain();
port    =  kb_smb_transport();

if(! smb_session_init()) audit(AUDIT_FN_FAIL, 'smb_session_init');
r = NetUseAdd(login:login, password:pass, domain:domain, share:"IPC$");

hklm = RegConnectRegistry(hkey:HKEY_LOCAL_MACHINE);
if ( isnull(hklm) )
{
 NetUseDel();
 exit(1);
}

key_h = RegOpenKey(handle:hklm, key:"SOFTWARE\VERITAS\Backup Exec\Install", mode:MAXIMUM_ALLOWED);
if ( isnull(key_h) )
{
 RegCloseKey(handle:hklm);
 NetUseDel();
 exit(0);
}

value = RegQueryValue(handle:key_h, item:"Path");
RegCloseKey(handle:key_h);
RegCloseKey(handle:hklm);
if ( isnull(value) )
{
 NetUseDel();
 exit(0);
}

share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:value[1]);
exe =  ereg_replace(pattern:"^[A-Za-z]:(.*)", replace:"\1\benetns.exe", string:value[1]);
NetUseDel(close:FALSE);

r = NetUseAdd(login:login, password:pass, domain:domain, share:share);
if ( r != 1 ) {
 NetUseDel();
 exit(1);
}

handle = CreateFile (file:exe, desired_access:GENERIC_READ, file_attributes:FILE_ATTRIBUTE_NORMAL, share_mode:FILE_SHARE_READ, create_disposition:OPEN_EXISTING);

if ( ! isnull(handle) )
{
 v = GetFileVersion(handle:handle);
 CloseFile(handle:handle);
 if ( ( v[0] < 8 ) ||
      ( ( v[0] == 8 ) && ( v[1] < 60 ) ) ||
      ( ( v[0] == 8 ) && ( v[1] == 60 ) && ( v[2] < 3878 ) ) ||
      ( ( v[0] == 8 ) && ( v[1] == 60 ) && ( v[2] == 3878 ) && ( v[3] < 68 ) ) ||
      ( ( v[0] == 9 ) && ( v[1] == 0 ) && ( v[2] < 4454 ) ) ||
      ( ( v[0] == 9 ) && ( v[1] == 0 ) && ( v[2] == 4454 ) && ( v[3] < 30 ) ) ||
      ( ( v[0] == 9 ) && ( v[1] == 1 ) && ( v[2] < 4691 ) ) ||
      ( ( v[0] == 9 ) && ( v[1] == 1 ) && ( v[2] == 4691 ) && ( v[3] < 40 ) ) )
    security_hole(port);
}

NetUseDel();

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/veritas_backup_exec_overflow.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\veritas_backup_exec_overflow.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/veritas_backup_exec_overflow.nasl

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How to Run

Here is how to run the Veritas Backup Exec Agent Browser 8.x < 8.60.3878 HF 68 / 9.0.x < 9.0.4454 HF 30 / 9.1.x < 9.1.4691 HF 40 RCE as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Windows plugin family.
On the right side table select Veritas Backup Exec Agent Browser 8.x < 8.60.3878 HF 68 / 9.0.x < 9.0.4454 HF 30 / 9.1.x < 9.1.4691 HF 40 RCE plugin ID 16230.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl veritas_backup_exec_overflow.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a veritas_backup_exec_overflow.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - veritas_backup_exec_overflow.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state veritas_backup_exec_overflow.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

11974

CERT | Computer Emergency Response Team:

907729

See also:

Similar and related Nessus plugins:

16232 - VERITAS Backup Exec Agent Browser Registration Request Remote Overflow
18551 - VERITAS Backup Exec Agent for Windows CONNECT_CLIENT_AUTH Remote Overflow
101294 - Veritas Backup Exec Remote Agent 14.1.x < 14.1.1786.1126 / 14.2.x < 14.2.1180.3160 / 16.0.x < 16.0.1142.1327 Use-after-free RCE (VTS17-006)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file veritas_backup_exec_overflow.nasl version 1.28. For more plugins, visit the Nessus Plugin Library.

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Veritas Backup Exec Agent Browser 8.x < 8.60.3878 HF 68 / 9.0.x < 9.0.4454 HF 30 / 9.1.x < 9.1.4691 HF 40 RCE - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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