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Vulnerability Alert

Cisco Unified Computing Management API Denial of Service Vulnerability

 
Threat Type:CWE-20: Input Validation
IntelliShield ID:29030
Version:1
First Published:2013 April 24 16:23 GMT
Last Published:2013 April 24 16:23 GMT
Port: Not available
CVE:CVE-2013-1184
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:7.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:6.4
Related Resources:
View related Security Advisory
 
 
Version Summary:Cisco Unified Computing System (UCS) Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Updates are available.
 
 
Description
Cisco UCS Manager contains a denial of service vulnerability in the management API. An unauthenticated, remote attacker who can submit a properly malformed request to the XML API management service of the Cisco UCS Manager could cause the service to stop responding. As a result, administrators could not make configuration changes or perform management actions on the Fabric Interconnect and computing resources managed by the device. A restart of the Fabric Interconnect is required to restore functionality.

Cisco has confirmed the vulnerability in a security advisory and has released software updates.
 
Warning Indicators
The following versions of Cisco UCS are vulnerable:
  • Versions prior to 1.2(1b)
  • All 1.0 versions
  • All 1.1 versions
 
IntelliShield Analysis
It is likely that an attacker would need access to an internal, private network to send requests to the XML API management service of 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 advisory for Cisco bug ID CSCtg48206 at the following link: cisco-sa-20130424-ucsmulti
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to cause a targeted device to stop responding, resulting in a denial of service (DoS) condition.
 
Technical Information
The vulnerability is due to insufficient validation of user-supplied input in the management API of the affected software.

An unauthenticated, remote attacker could exploit this vulnerability by submitting a malformed request to the XML API management service of a targeted device. Processing the malformed request could cause the device to stop responding, resulting in a DoS condition.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to implement an intrusion prevention system (IPS) or intrusion detection system (IDS) to help detect and prevent attacks that attempt to exploit this vulnerability.

The Cisco Applied Intelligence team has created the following companion document to guide administrators in identifying and mitigating attempts to exploit this vulnerability prior to applying updated software: Identifying and Mitigating Multiple Vulnerabilities in Cisco Unified Computing System

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 e-mail at tac@cisco.com.
 
Alert History
 
Initial Release


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

Primary Products:
CiscoCisco Unified Computing System (Managed) 1.0 Base, (2k) | 1.1 Base, (1m) | 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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