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Vulnerability Alert

Cisco Identity Services Engine File Space Denial of Service Vulnerability

 
Threat Type:CWE-399: Resource Management Errors
IntelliShield ID:31278
Version:1
First Published:2013 October 16 18:21 GMT
Last Published:2013 October 16 18:21 GMT
Port: Not available
CVE:CVE-2013-5540
BugTraq ID:63034
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:6.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:6.8
 
Version Summary:Cisco Identity Services Engine contains a vulnerability that could allow an authenticated, remote attacker to cause a denial of service condition. Updates are not available.
 
 
Description
A vulnerability in the file upload management of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to upload multiple files to a specific location of the filesystem and exhaust disk space.

The vulnerability is due to insufficient management of filesystem free space. An attacker could exploit this vulnerability by uploading multiple files. An exploit could allow the attacker to exhaust free disk space on the system, resulting in a denial of service (DoS) condition in which the administration interface becomes unresponsive.

Cisco has confirmed the vulnerability in a security notice; however, software updates are not available.
 
Warning Indicators
At the time this alert was first published, Cisco ISE versions 1.2 and prior were vulnerable. Later releases of Cisco ISE may also be vulnerable.
 
IntelliShield Analysis
To exploit this vulnerability, an attacker would need to authenticate to the targeted device. This access requirement decreases the likelihood of a successful exploit.
 
Vendor Announcements
Cisco has released a security notice at the following link: CVE-2013-5540

Customers are advised to consult Cisco bug ID CSCui67519 for a complete list of affected product versions.
 
Impact
An authenticated, remote attacker could exploit this vulnerability to exhaust available disk space on a targeted device, resulting in a DoS condition.
 
Technical Information
The vulnerability is due to insufficient management of filesystem free space by the file upload management component of the affected software.

An authenticated, remote attacker could exploit this vulnerability by uploading multiple files. An exploit could allow the attacker to exhaust free disk space on the system, resulting in a DoS condition in which the administration interface becomes unresponsive.
 
Safeguards
Administrators are advised to contact the vendor regarding future updates and releases.

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
Software updates are not available.
 
Alert History
 
Initial Release


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

Primary Products:
CiscoCisco Identity Services Engine Software 1.0 Base, .4.573 | 1.0 MR Base | 1.1 Base | 1.2 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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