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Vulnerability Alert

Cisco WebEx Error Message Information Disclosure Vulnerability

 
Threat Type:CWE-200: Information Leak / Disclosure
IntelliShield ID:30263
Version:1
First Published:2013 August 02 19:32 GMT
Last Published:2013 August 02 19:32 GMT
Port: Not available
CVE:CVE-2013-3425
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Harassment
CVSS Base:4.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.3
 
Version Summary:Cisco WebEx contains a vulnerability that could allow an authenticated, remote attacker to access sensitive information on a targeted device. Updates are available.
 
 
Description
A vulnerability in Cisco WebEx could allow an authenticated, remote attacker to access sensitive information.

The vulnerability is due to improper error messages displayed by the affected software when handling requests to view another user's files. An attacker could exploit this vulnerability by submitting crafted security parameter index (SPI) calls to the affected software. Successful exploitation could allow attackers to determine the existence of files they are not authorized to access. This information could be used to launch additional attacks.

Cisco has confirmed this vulnerability in a security notice and released software updates.
 
Warning Indicators
At the time this alert was first published, Cisco WebEx version 11 was vulnerable. Later versions of Cisco WebEx may also be affected.
 
IntelliShield Analysis
To exploit this vulnerability, an attacker must authenticate to a targeted device. This access requirement decreases the likelihood of a successful exploit.

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 a security notice at the following link: CVE-2013-3425

Customers should refer to Cisco bug ID CSCuc35965 for the most complete list of affected product versions.
 
Impact
An authenticated, remote attacker could exploit this vulnerability to access sensitive information. This information could be used to launch additional attacks.
 
Technical Information
The vulnerability is due to improper error messages displayed by the affected software when handling requests to view another user's files.

An authenticated, remote attacker could exploit this vulnerability by submitting crafted SPI calls to the affected software. When the malicious calls are processed by the affected software, the resulting error message could reveal the existence of another user's file. Successful exploitation could allow attackers to determine the existence of files they are not privileged to access. The attacker could use this information to launch additional attacks.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to have network access.

Administrators are advised to allow only privileged users to access administration or management systems.

Administrators are advised to monitor affected systems.
 
Patches/Software
Cisco customers with active contracts should contact their Cisco support team for assistance in upgrading to a software version that includes fixes for this vulnerability. Cisco customers without contracts may contact the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at tac@cisco.com for assistance.
 
Alert History
 
Initial Release


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
CiscoCisco WebEx Meeting Center Original Release Base

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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