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TITLE:
Juniper JUNOS JWeb Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA36829

VERIFY ADVISORY:
http://secunia.com/advisories/36829/

DESCRIPTION:
Some vulnerabilities have been reported in Juniper JUNOS, which can
be exploited by malicious people to conduct cross-site scripting
attacks and by malicious users to conduct script insertion attacks.

1) Input passed via the URL to the JWeb administrative web interface
is not properly sanitised before being returned to the user. This can
be exploited to execute arbitrary HTML and script code in a user's
browser session in context of an affected site.

2) Input passed via multiple parameters to the JWeb administrative
web interface is not properly sanitised before being returned to the
user. This can be exploited to execute arbitrary HTML and script code
in a user's browser session in context of an affected site.

The following parameters passed to the following scripts are
reportedly affected:
* "host" to /diagnose?m[]=pinghost and /diagnose?m[]=traceroute
* "probe-limit" to /configuration?m[]=wizards&m[]=rpm
* "wizard_ids" and "pager-new-identifier" to
/configuration?m[]=wizards&m[]=firewall-acl&m[]=firewall-filters
* "os-physical-interface-name" to
/configuration?m[]=wizards&m[]=cos&m[]=cos-interfaces
* "wizard-args" and "wizard-ids" to
/configuration?m[]=wizards&m[]=snmp
* "username" and "fullname" to /configuration?m[]=wizards&m[]=users
* "certname" and "certbody" to /configuration?m[]=wizards&m[]=https

3) Input passed via multiple parameters to the JWeb administrative
web interface is not properly sanitised before being returned to the
user. This can be exploited to execute arbitrary HTML and script code
in a user's browser session in context of an affected site.

The following parameters passed to the following scripts are
reportedly affected:
* "JEXEC_OUTID" to
/jexec?JEXEC_MODE=JEXEC_MODE_RELAY_OUTPUT&JEXEC_RPC=request-background-task-start-junoscript
* "act" to /scripter.php?debug=1&ifid=1&refresh-time=1
* "refresh-time" to /scripter.php
* "ifid" to /scripter?act=header
* "revision" to /configuration?m[]=history&action=rollback
* "m[]" to /monitor, /manage, /events, /configuration, /alarms, and
/
" "wizard-next" to /configuration?m[]=wizards&m[]=https

4) Input passed via the "Contact Information", "System Description",
"Local Engine ID", "System Location", and "System Name Override"
fields to /configuration?m[]=wizards&m[]=snmp&start=true is not
properly sanitised before being stored. This can be exploited to
insert arbitrary HTML and script code, which is executed in a user's
browser session in context of an affected site when the malicious
data is viewed.

Vulnerability #1 is reported in JWeb version 8.5R1.14 and 9.0R1.1.
Vulnerabilities #2 through #4 are reported in version 8.5R1.14.

SOLUTION:
Filter malicious characters and character sequences in a web proxy.

PROVIDED AND/OR DISCOVERED BY:
1, 2) Amir Azam of ProCheckUp Ltd
3, 4) Richard Brain of ProCheckUp Ltd

ORIGINAL ADVISORY:
http://www.procheckup.com/vulnerability_manager/vulnerabilities/pr09-08
http://www.procheckup.com/vulnerability_manager/vulnerabilities/pr09-09
http://www.procheckup.com/vulnerability_manager/vulnerabilities/pr09-10

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