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ESB-2016.0287 - [CentOS][Virtual] Cisco Jabber Guest Server: Cross-site scripting - Remote with user interaction

Date: 04 February 2016

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0287
            Cisco Jabber Guest Server HTTP Web-Based Management
               Interface Cross-Site Scripting Vulnerability
                              4 February 2016

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco Jabber Guest Server
Publisher:         Cisco Systems
Operating System:  CentOS
                   Virtualisation
Impact/Access:     Cross-site Scripting -- Remote with User Interaction
Resolution:        Mitigation
CVE Names:         CVE-2016-1311  

Original Bulletin: 
   http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160203-jgs

Comment: AusCERT recommends users verify unsolicited links. In addition,
         administrators should review access to the web interface.

- --------------------------BEGIN INCLUDED TEXT--------------------

Cisco Jabber Guest Server HTTP Web-Based Management Interface Cross-Site 
Scripting Vulnerability

Medium

Advisory ID:

cisco-sa-20160203-jgs

Published:

2016 February 3 20:15 GMT

Version 1.0:

Final

CVSS Score:

Base - 4.3

Workarounds:

No workarounds available

Cisco Bug IDs:

CSCuy08224

CVE-2016-1311

CWE-79

Summary

A vulnerability in the HTTP web-based management interface of the Cisco Jabber
Guest application could allow an unauthenticated, remote attacker to conduct a
cross-site scripting (XSS) attack against a user of the web interface.

The vulnerability is due to insufficient input validation of the HTTP host tag
parameter. An attacker could exploit this vulnerability by convincing a user 
to click a specific link.

Additional information about XSS attacks and potential mitigations is at the 
following links:

Understanding Cross-Site Scripting Threat Vectors

http://www.cisco.com/en/US/products/cmb/cisco-amb-20060922-understanding-xss.html

Cross-Site Scripting

https://www.owasp.org/index.php/Cross-site_Scripting_(XSS)

Cisco has not released software updates that address this vulnerability. 
Workarounds that address this vulnerability are not available.

This advisory is available at the following link: 
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160203-jgs

Affected Products

Vulnerable Products

Cisco Jabber Guest Server version 10.6(8) is vulnerable.

Products Confirmed Not Vulnerable

No other Cisco products are currently known to be affected by this 
vulnerability.

Workarounds

Workarounds are not available.

Fixed Software

When considering software upgrades, customers are advised to consult the Cisco
Security Advisories and Responses archive at http://www.cisco.com/go/psirt and
review subsequent advisories to determine exposure and a complete upgrade 
solution.

In all cases, customers should ensure that the devices to be upgraded contain
sufficient memory and confirm that current hardware and software 
configurations will continue to be supported properly by the new release. If 
the information is not clear, customers are advised to contact the Cisco 
Technical Assistance Center (TAC) or their contracted maintenance providers.

Exploitation and Public Announcements

The Cisco Product Security Incident Response Team (PSIRT) is not aware of any
public announcements or malicious use of the vulnerability that is described 
in this advisory.

Source

Cisco would like to thank security researcher Tom Donaldson for finding and 
reporting this vulnerability.

URL

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160203-jgs

Revision History

Version	Description 		Section Status 	Date

1.0 	Initial public release 		Final 	2016-February-03

Legal Disclaimer

THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF 
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO 
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.

A standalone copy or paraphrase of the text of this document that omits the 
distribution URL is an uncontrolled copy and may lack important information or
contain factual errors. The information in this document is intended for end 
users of Cisco products.

- --------------------------END INCLUDED TEXT--------------------

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
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