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AUSCERT External Security Bulletin Redistribution
ESB-2015.1880
Cisco Unified Communications Manager ccmivr Page Cross-Site
Scripting Vulnerability
16 July 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Unified Communications Manager
Publisher: Cisco Systems
Operating System: Cisco
VMware ESX Server
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2015-4272
Original Bulletin:
http://tools.cisco.com/security/center/viewAlert.x?alertId=39905
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Vulnerability Alert
Cisco Unified Communications Manager ccmivr Page Cross-Site Scripting
Vulnerability
Threat Type: CWE-79: Cross-Site Scripting (XSS)
IntelliShield ID: 39905
Version: 1
First Published: 2015 July 13 22:18 GMT
Last Published: 2015 July 13 22:18 GMT
Port: Not available
CVE: CVE-2015-4272
Urgency: Unlikely Use
Credibility: Confirmed
Severity: Mild Damage
CVSS Base: 4.3
CVSS Temporal: 3.6
Version Summary: Cisco Unified Communications Manager contains a vulnerability
that could allow an unauthenticated, remote attacker to conduct cross-site
scripting attacks. Updates are available.
Description
A vulnerability in several parameters of the ccmivr page of Cisco Unified
Communications Manager, formerly known as CallManager, could allow an
unauthenticated, remote attacker to conduct a cross-site scripting (XSS)
attack against a user of the web interface on an affected system.
The vulnerability is due to insufficient input validation of some parameters
used by the ccmivr page of the affected software. An attacker could exploit
this vulnerability by convincing the user of the system to follow an
attacker-supplied link. An exploit could allow the attacker to cause arbitrary
script or HTML to be executed on the user's browser within the context of the
affected application.
Cisco has confirmed the vulnerability and released software updates.
Warning Indicators
At the time this alert was first published, Cisco Unified Communications
Manager release 10.5(2.10000.5) was vulnerable. Later releases of Cisco
Unified Communications 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.
Vendor Announcements
Cisco has released bug ID CSCut19580 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 script or HTML in the user's browser in the context of the affected
application, which could be used to access sensitive browser-based information
such as authentication cookies.
Technical Information
The vulnerability is due to insufficient input validation of certain
parameters used by the ccmivr page of the affected software.
An unauthenticated, remote attacker could exploit this vulnerability by
convincing the user of a targeted system to follow a malicious link. A
successful exploit could allow the attacker to execute arbitrary script or
HTML in the user's session, which could be used to access sensitive
browser-based information such as authentication cookies.
Safeguards
Administrators are advised to apply the appropriate updates.
Users should verify that unsolicited links are safe to follow.
Users are advised not to open email messages from suspicious or unrecognized
sources. If users cannot verify that links or attachments included in email
messages are safe, they are advised not to open them.
For additional information about cross-site scripting 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 Communications Manager 10.5 (2.10000.5)
Associated Products: N/A
Alerts and bulletins on the Cisco Security Intelligence Operations Portal are
highlighted by analysts in the Cisco Threat Operations Center and represent a
subset of the comprehensive content that is available through Cisco Security
IntelliShield Alert Manager Service. This customizable threat and
vulnerability alert service provides security staff with access to timely,
accurate, and credible information about threats and vulnerabilities that may
affect their environment.
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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