Vulnerabilities > CVE-2018-7573 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Ftpshell Client 6.70

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
ftpshell
CWE-119
critical
exploit available
metasploit
NVD
Published: 2018-03-01
Updated: 2024-11-21

Summary

An issue was discovered in FTPShell Client 6.7. A remote FTP server can send 400 characters of 'F' in conjunction with the FTP 220 response code to crash the application; after this overflow, one can run arbitrary code on the victim machine. This is similar to CVE-2009-3364 and CVE-2017-6465.

Vulnerable Configurations

Part Description Count
Application
Ftpshell
1

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.

Exploit-Db

  • descriptionFTPShell client 6.70 (Enterprise edition) - Stack Buffer Overflow (Metasploit). CVE-2018-7573. Remote exploit for Windows platform. Tags: Metasploit Framewor...
    fileexploits/windows/remote/44968.rb
    idEDB-ID:44968
    last seen2018-07-02
    modified2018-07-02
    platformwindows
    port
    published2018-07-02
    reporterExploit-DB
    sourcehttps://www.exploit-db.com/download/44968/
    titleFTPShell client 6.70 (Enterprise edition) - Stack Buffer Overflow (Metasploit)
    typeremote
  • descriptionFTPShell Client 6.7 - Buffer Overflow. CVE-2018-7573. Remote exploit for Windows platform
    fileexploits/windows/remote/44596.py
    idEDB-ID:44596
    last seen2018-05-24
    modified2018-05-08
    platformwindows
    port
    published2018-05-08
    reporterExploit-DB
    sourcehttps://www.exploit-db.com/download/44596/
    titleFTPShell Client 6.7 - Buffer Overflow
    typeremote

Metasploit

descriptionThis module exploits a buffer overflow in the FTPShell client 6.70 (Enterprise edition) allowing remote code execution.
idMSF:EXPLOIT/WINDOWS/FTP/FTPSHELL_CLI_BOF
last seen2020-06-13
modified2018-06-29
published2018-06-27
referenceshttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7573
reporterRapid7
sourcehttps://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/windows/ftp/ftpshell_cli_bof.rb
titleFTPShell client 6.70 (Enterprise edition) Stack Buffer Overflow

Packetstorm

References