Cisco Unified Computing System E-Series Blade Servers SSH Processing Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID: 1030813|
SecurityTracker URL: http://securitytracker.com/id/1030813
(Links to External Site)
Date: Sep 8 2014
Denial of service via network|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): E-Series Blade Servers; Cisco IMC versions prior to 2.3.1|
A vulnerability was reported in Cisco Unified Computing System E-Series Blade Servers. A remote user can cause denial of service conditions.|
A remote user can send a specially crafted SSH packet to the SSH service on the target Cisco Integrated Management Controller (Cisco IMC) to cause the Cisco IMC to become unresponsive.
The operating system running on the target blade is not affected.
The Cisco IMC cannot be restarted from the IOS command line interface or via IPMI.
To return the system to normal operation, the target E-Series Server likely must be restarted by switching the blade's power switch or by restarting the ISR G2 router that the device is installed in.
The vendor has assigned bug ID CSCuo69206 to this vulnerability.
A remote user can cause the target Cisco IMC to become unresponsive.|
The vendor has issued a fix (2.3.1).|
The vendor's advisory is available at:
Vendor URL: tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140908-ucse (Links to External Site)
Source Message Contents
Subject: Cisco Security Advisory: Cisco Unified Computing System E-Series Blade Servers Cisco Integrated Management Controller SSH Denial of Service Vulnerability|
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Cisco Unified Computing System E-Series Blade Servers Cisco Integrated Management Controller SSH Denial of Service Vulnerability
Advisory ID: cisco-sa-20140908-ucse
For Public Release 2014 September 8 16:00 UTC (GMT)
A vulnerability in the Cisco Integrated Management Controller (Cisco IMC) SSH module of the Cisco Unified Computing System E-Series Blade servers could allow an unauthenticated, remote attacker to cause a denial of service condition.
The vulnerability is due to a failure to properly handle a crafted SSH packet. An attacker could exploit this vulnerability by sending a crafted packet to the SSH server running on the Cisco IMC of an affected device, which could result in the Cisco IMC becoming unresponsive. The operating system running on the blade will be unaffected.
Cisco has released free software updates that address this vulnerability.
This advisory is available at the following link:
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