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AUSCERT External Security Bulletin Redistribution
ESB-2015.1322
Cisco WebEx Meetings Server Cross-Site Scripting Vulnerability
15 May 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco WebEx Meetings Server
Publisher: Cisco Systems
Operating System: Cisco
Windows
VMware ESX Server
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2015-0634
Original Bulletin:
http://tools.cisco.com/security/center/viewAlert.x?alertId=38811
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Vulnerability Alert
Cisco WebEx Meetings Server Cross-Site Scripting Vulnerability
Threat Type: CWE-79: Cross-Site Scripting (XSS)
IntelliShield ID: 38811
Version: 1
First Published: 2015 May 13 19:16 GMT
Last Published: 2015 May 13 19:16 GMT
Port: Not available
CVE: CVE-2015-0634
Urgency: Unlikely Use
Credibility: Confirmed
Severity: Mild Damage
CVSS Base: 4.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal: 3.6
Version Summary: Cisco WebEx Meetings Server contains a vulnerability that
could allow an unauthenticated, remote attacker to conduct cross-site
scripting attacks. Updates are available.
Description
A vulnerability within the administrative interface of Cisco WebEx Meetings
Server could allow an unauthenticated, remote attacker to conduct cross-site
scripting attacks.
The vulnerability is due to insufficient validation of user-supplied input
submitted to an affected device. An unauthenticated, remote attacker could
exploit this vulnerability by convincing a user to follow a malicious link or
attacker-controlled web page. A successful exploit could allow an attacker to
execute arbitrary script or HTML code on the user's browser within the context
of the affected site.
Cisco has confirmed the vulnerability and software updates are available.
Warning Indicators
At the time this alert was first published, Cisco WebEx Meetings Server
versions 2.5 and 2.5.0.997 were vulnerable. Later versions of Cisco WebEx
Meetings Server may also be vulnerable.
IntelliShield Analysis
To exploit the vulnerability, the attacker may provide a link that directs a
user to a malicious website and use misleading language or instructions to
persuade the user to follow the link.
Vendor Announcements
Cisco has released bug ID CSCuq86310 for registered users, which contains
additional details and an up-to-date list of affected product versions.
Impact
An unauthenticated, remote attacker could exploit this vulnerability to
execute arbitrary script code in the user's browser session in the context of
the affected site. This could allow the attacker to access sensitive
browser-based information such as authentication cookies and recently
submitted data.
Technical Information
The vulnerability is due to insufficient validation of user-supplied input
submitted to an affected device.
An unauthenticated, remote attacker could exploit this vulnerability by
convincing a user to follow a malicious link or attacker-controlled web page.
A successful exploit could allow an attacker to execute arbitrary script or
HTML code on the user's browser within the context of the affected site.
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 WebEx Meeting Center 2.5 .0.997
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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