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AUSCERT External Security Bulletin Redistribution
ESB-2015.2161.3
Cisco Unified Interaction Manager Cross-Site Scripting Vulnerability
20 August 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Unified Interaction Manager
Publisher: Cisco Systems
Operating System: Windows
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2015-6255
Original Bulletin:
http://tools.cisco.com/security/center/viewAlert.x?alertId=40555
Revision History: August 20 2015: Reference added
August 19 2015: Minor revision
August 19 2015: Initial Release
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Vulnerability Alert
Cisco Unified Interaction Manager Cross-Site Scripting Vulnerability
Threat Type: CWE-79: Cross-Site Scripting (XSS)
IntelliShield ID: 40555
Version: 1
First Published: 2015 August 18 20:26 GMT
Last Published: 2015 August 18 20:26 GMT
Port: Not available
CVE: CVE-2015-6255
Urgency: Unlikely Use
Credibility: Confirmed
Severity: Mild Damage
CVSS Base: 4.3
CVSS Temporal: 3.6
Version Summary: Cisco Unified Interaction Manager contains a vulnerability
that could allow an unauthenticated, remote attacker to conduct cross-site
scripting attacks. Updates are available.
Description
A vulnerability in the web chat interface of Cisco Unified Interaction Manager
could allow an unauthenticated, remote attacker to conduct a cross-site
scripting (XSS) attack against a user of the chat on the affected system.
The vulnerability is due to insufficient input validation of user-supplied
input. An attacker could exploit this vulnerability by crafting a malicious
chat message.
Cisco has confirmed the vulnerability and released software updates.
Warning Indicators
At the time this alert was first published, Cisco Unified Web and E-Mail
Interaction Manager release 9.0(2) was vulnerable. Later releases of Cisco
Unified Web and E-Mail Interaction Manager may also be vulnerable.
IntelliShield Analysis
To exploit the vulnerability, the attacker may provide a link that directs a
user to a malicious site and use misleading language or instructions to
persuade the user to follow the provided link.
Cisco indicates through the CVSS score that functional exploit code exists;
however, the code is not known to be publicly available.
Cisco would like to thank Jakub Kaluzny of Securing.pl for reporting this
vulnerability.
Vendor Announcements
Cisco has released bug ID CSCuo89051 for registered users, which contains
additional details and an up-to-date list of affected product versions.
Impact
An unauthenticated, remote attacker could exploit the vulnerability to execute
arbitrary code in the user's session, which could be used to access sensitive
browser-based information. The attacker could use this information to conduct
further attacks.
Technical Information
The vulnerability is due to insufficient validation of user-supplied input by
a device running the affected software.
An unauthenticated, remote attacker could exploit this vulnerability by
crafting a malicious chat message and sending the message to a targeted user.
If the user clicks on a malicious link within the chat message, the attacker
could execute arbitrary code in the user's session, which could be leveraged
to conduct further attacks.
Safeguards
Administrators are advised to apply the appropriate updates.
Users should verify that unsolicited links are safe to follow.
For additional information about XSS attacks and the methods used to exploit
these vulnerabilities, see the Cisco Applied Mitigation Bulletin Understanding
Cross-Site Scripting (XSS) Threat Vectors.
Administrators are advised to monitor affected systems.
Patches/Software
Cisco customers with active contracts can obtain updates through the Software
Center at the following link: Cisco. Cisco customers without contracts can
obtain upgrades by contacting the Cisco Technical Assistance Center at
1-800-553-2447 or 1-408-526-7209 or via email at tac@cisco.com.
Alert History
Initial Release
Product Sets
The security vulnerability applies to the following combinations of products.
Primary Products:
Cisco Cisco Unified Web and E-Mail Interaction Manager 9.0 (2)
Associated Products:
N/A
LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual
users; users may value alerts differently based upon their network
configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED
THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED
THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION
IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE
TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES
THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
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