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AUSCERT External Security Bulletin Redistribution
ESB-2015.0689
Cisco Content Services Switch (11500) Unauthenticated Port
Forwarding Vulnerability
20 March 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Content Services Switch
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Unauthorised Access -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2015-0667
Original Bulletin:
http://tools.cisco.com/security/center/viewAlert.x?alertId=37889
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Vulnerability Alert
Cisco Content Services Switch (11500) Unauthenticated Port Forwarding
Vulnerability
Threat Type: CWE-264: Permissions, Privileges, and Access Control
IntelliShield ID: 37889
Version: 1
First Published: 2015 March 18 12:52 GMT
Last Published: 2015 March 18 12:52 GMT
Port: Not available
CVE: CVE-2015-0667
Urgency: Unlikely Use
Credibility: Confirmed
Severity: Mild Damage
CVSS Base: 5.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal: 4.5
Version Summary: Cisco Content Services Switch (11500) contains a
vulnerability that could allow an unauthenticated, remote attacker to gain
unauthorized access to other devices. Updates are not available.
Description
A vulnerability in the Management Interface of the Cisco Content Services
Switch (11500) could allow an unauthenticated, remote attacker to gain
unauthorized access to other devices on the network.
The vulnerability is due to improper handling of SSH packets. An attacker
could exploit this vulnerability by sending crafted packets to the Management
Interface on the Cisco Content Services Switch (CSS).
Cisco has confirmed the vulnerability; however, software updates are not
available.
Warning Indicators
At the time this alert was first published, Cisco CSS 11500 series running
versions 8.20.4.02 and prior were vulnerable. Later versions of Cisco CSS may
also be vulnerable.
IntelliShield Analysis
To exploit this vulnerability, an attacker may need to acquire additional
information, such as the IP address of the Management Interface on a targeted
device in order to send crafted packets to the device.
Cisco indicates through the CVSS score that proof-of-concept exploit code
exists; however, the code is not known to be publicly available.
Vendor Announcements
Cisco has released bug ID CSCut14855 for registered users that contains
additional details and an up-to-date list of affected products versions.
Impact
An unauthenticated, remote attacker could exploit this vulnerability to gain
unauthorized access to other devices on the same network as the affected
device. A successful exploit could be used to conduct further attacks.
Technical Information
The vulnerability is due to improper handling of SSH packets by an affected
device.
An unauthenticated, remote attacker could exploit this vulnerability by
sending crafted SSH packets to the Management Interface on the targeted
device. If successful, the attacker could have the ability to gain
unauthorized access to other devices that reside on the same network as the
targeted device, which could be used to conduct further attacks.
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 can help protect affected systems from external attacks by
using a solid firewall strategy.
Administrators may consider using IP-based access control lists (ACLs) to
allow only trusted systems to access the affected 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:
Cisco Cisco Content Services Switch (CSS) 11506 Base, 5.0, 6.10, 7.1, 7.2,
7.3, 7.4, 7.50.1.03, 7.50.2.05,
7.50.3.03, 8.10.1.06, 8.10.2.05,
8.10.3.01, 8.10.4.01, 8.10.5.03,
8.10.6.02, 8.20.0.01, 8.20.1.01,
8.20.2.01, 8.20.3.03, 8.20.4.02
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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