Vulnerabilities > CVE-2011-4040 - Buffer Errors vulnerability in Njstar Communicator 3.0.11818

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
njstar
CWE-119
critical
exploit available
metasploit

Summary

Buffer overflow in MiniSmtp 3.0.11818 in NJStar Communicator allows remote attackers to execute arbitrary code via a crafted packet.

Vulnerable Configurations

Part Description Count
Application
Njstar
1

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.

Exploit-Db

  • descriptionNJStar Communicator MiniSmtp - Buffer Overflow [ASLR Bypass]. CVE-2011-4040. Dos exploit for windows platform
    idEDB-ID:18196
    last seen2016-02-02
    modified2011-12-03
    published2011-12-03
    reporterZune
    sourcehttps://www.exploit-db.com/download/18196/
    titleNJStar Communicator MiniSmtp - Buffer Overflow ASLR Bypass
  • descriptionNJStar Communicator 3.00 MiniSMTP Server Remote Exploit. CVE-2011-4040. Remote exploit for windows platform
    idEDB-ID:18057
    last seen2016-02-02
    modified2011-10-31
    published2011-10-31
    reporterDillon Beresford
    sourcehttps://www.exploit-db.com/download/18057/
    titleNJStar Communicator 3.00 MiniSMTP Server Remote Exploit

Metasploit

descriptionThis module exploits a stack buffer overflow vulnerability in NJStar Communicator Version 3.00 MiniSMTP server. The MiniSMTP application can be seen in multiple NJStar products, and will continue to run in the background even if the software is already shutdown. According to the vendor's testimonials, NJStar software is also used by well known companies such as Siemens, NEC, Google, Yahoo, eBay; government agencies such as the FBI, Department of Justice (HK); as well as a long list of universities such as Yale, Harvard, University of Tokyo, etc.
idMSF:EXPLOIT/WINDOWS/SMTP/NJSTAR_SMTP_BOF
last seen2020-06-07
modified2017-07-24
published2011-11-01
references
reporterRapid7
sourcehttps://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/windows/smtp/njstar_smtp_bof.rb
titleNJStar Communicator 3.00 MiniSMTP Buffer Overflow

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/107491/njstart-overflow.txt
idPACKETSTORM:107491
last seen2016-12-05
published2011-12-03
reporterJulian Pulido
sourcehttps://packetstormsecurity.com/files/107491/NJStar-Communicator-3.0-MiniSmtp-Buffer-Overflow.html
titleNJStar Communicator 3.0 MiniSmtp Buffer Overflow